bootstrap4.css
*,
*::before,
*::after {
  box-sizing: border-box;
}
bootstrap4.css
hr {
  box-sizing: content-box;
  height: 0;
  overflow: visible;
}
bootstrap4.css
input[type="radio"],
input[type="checkbox"] {
  box-sizing: border-box;
  padding: 0;
}
bootstrap4.css
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="month"] {
  -webkit-appearance: listbox;
}
bootstrap4.css
.row {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  margin-right: -15px;
  margin-left: -15px;
}
bootstrap4.css
.form-control {
  display: block;
  width: 100%;
  height: calc(1.5em + 0.75rem + 2px);
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: #495057;
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid #ced4da;
  border-radius: 0.25rem;
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
bootstrap4.css
.form-control:focus {
  color: #495057;
  background-color: #fff;
  border-color: #80bdff;
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.form-row {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  margin-right: -5px;
  margin-left: -5px;
}
bootstrap4.css
.form-check-inline {
  display: -ms-inline-flexbox;
  display: inline-flex;
  -ms-flex-align: center;
  align-items: center;
  padding-left: 0;
  margin-right: 0.75rem;
}
bootstrap4.css
.was-validated .form-control:valid:focus, .form-control.is-valid:focus {
  border-color: #28a745;
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}
bootstrap4.css
.was-validated .custom-select:valid:focus, .custom-select.is-valid:focus {
  border-color: #28a745;
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}
bootstrap4.css
.was-validated .custom-control-input:valid:focus ~ .custom-control-label::before, .custom-control-input.is-valid:focus ~ .custom-control-label::before {
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}
bootstrap4.css
.was-validated .custom-file-input:valid:focus ~ .custom-file-label, .custom-file-input.is-valid:focus ~ .custom-file-label {
  border-color: #28a745;
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}
bootstrap4.css
.was-validated .form-control:invalid:focus, .form-control.is-invalid:focus {
  border-color: #dc3545;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}
bootstrap4.css
.was-validated .custom-select:invalid:focus, .custom-select.is-invalid:focus {
  border-color: #dc3545;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}
bootstrap4.css
.was-validated .custom-control-input:invalid:focus ~ .custom-control-label::before, .custom-control-input.is-invalid:focus ~ .custom-control-label::before {
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}
bootstrap4.css
.was-validated .custom-file-input:invalid:focus ~ .custom-file-label, .custom-file-input.is-invalid:focus ~ .custom-file-label {
  border-color: #dc3545;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}
bootstrap4.css
.form-inline {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-flow: row wrap;
  flex-flow: row wrap;
  -ms-flex-align: center;
  align-items: center;
}
bootstrap4.css
@media (min-width: 576px) {
  .form-inline label {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-pack: center;
    justify-content: center;
    margin-bottom: 0;
  }
  .form-inline .form-group {
    display: -ms-flexbox;
    display: flex;
    -ms-flex: 0 0 auto;
    flex: 0 0 auto;
    -ms-flex-flow: row wrap;
    flex-flow: row wrap;
    -ms-flex-align: center;
    align-items: center;
    margin-bottom: 0;
  }
  .form-inline .form-control {
    display: inline-block;
    width: auto;
    vertical-align: middle;
  }
  .form-inline .form-control-plaintext {
    display: inline-block;
  }
  .form-inline .input-group,
  .form-inline .custom-select {
    width: auto;
  }
  .form-inline .form-check {
    display: -ms-flexbox;
  
bootstrap4.css
.btn {
  display: inline-block;
  font-weight: 400;
  color: #212529;
  text-align: center;
  vertical-align: middle;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  background-color: transparent;
  border: 1px solid transparent;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: 0.25rem;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
bootstrap4.css
.btn:focus, .btn.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.btn-primary:focus, .btn-primary.focus {
  box-shadow: 0 0 0 0.2rem rgba(38, 143, 255, 0.5);
}
bootstrap4.css
.btn-primary:not(:disabled):not(.disabled):active:focus, .btn-primary:not(:disabled):not(.disabled).active:focus,
.show > .btn-primary.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(38, 143, 255, 0.5);
}
bootstrap4.css
.btn-secondary:focus, .btn-secondary.focus {
  box-shadow: 0 0 0 0.2rem rgba(130, 138, 145, 0.5);
}
bootstrap4.css
.btn-secondary:not(:disabled):not(.disabled):active:focus, .btn-secondary:not(:disabled):not(.disabled).active:focus,
.show > .btn-secondary.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(130, 138, 145, 0.5);
}
bootstrap4.css
.btn-success:focus, .btn-success.focus {
  box-shadow: 0 0 0 0.2rem rgba(72, 180, 97, 0.5);
}
bootstrap4.css
.btn-success:not(:disabled):not(.disabled):active:focus, .btn-success:not(:disabled):not(.disabled).active:focus,
.show > .btn-success.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(72, 180, 97, 0.5);
}
bootstrap4.css
.btn-info:focus, .btn-info.focus {
  box-shadow: 0 0 0 0.2rem rgba(58, 176, 195, 0.5);
}
bootstrap4.css
.btn-info:not(:disabled):not(.disabled):active:focus, .btn-info:not(:disabled):not(.disabled).active:focus,
.show > .btn-info.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(58, 176, 195, 0.5);
}
bootstrap4.css
.btn-warning:focus, .btn-warning.focus {
  box-shadow: 0 0 0 0.2rem rgba(222, 170, 12, 0.5);
}
bootstrap4.css
.btn-warning:not(:disabled):not(.disabled):active:focus, .btn-warning:not(:disabled):not(.disabled).active:focus,
.show > .btn-warning.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(222, 170, 12, 0.5);
}
bootstrap4.css
.btn-danger:focus, .btn-danger.focus {
  box-shadow: 0 0 0 0.2rem rgba(225, 83, 97, 0.5);
}
bootstrap4.css
.btn-danger:not(:disabled):not(.disabled):active:focus, .btn-danger:not(:disabled):not(.disabled).active:focus,
.show > .btn-danger.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(225, 83, 97, 0.5);
}
bootstrap4.css
.btn-light:focus, .btn-light.focus {
  box-shadow: 0 0 0 0.2rem rgba(216, 217, 219, 0.5);
}
bootstrap4.css
.btn-light:not(:disabled):not(.disabled):active:focus, .btn-light:not(:disabled):not(.disabled).active:focus,
.show > .btn-light.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(216, 217, 219, 0.5);
}
bootstrap4.css
.btn-dark:focus, .btn-dark.focus {
  box-shadow: 0 0 0 0.2rem rgba(82, 88, 93, 0.5);
}
bootstrap4.css
.btn-dark:not(:disabled):not(.disabled):active:focus, .btn-dark:not(:disabled):not(.disabled).active:focus,
.show > .btn-dark.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(82, 88, 93, 0.5);
}
bootstrap4.css
.btn-outline-primary:focus, .btn-outline-primary.focus {
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.5);
}
bootstrap4.css
.btn-outline-primary:not(:disabled):not(.disabled):active:focus, .btn-outline-primary:not(:disabled):not(.disabled).active:focus,
.show > .btn-outline-primary.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.5);
}
bootstrap4.css
.btn-outline-secondary:focus, .btn-outline-secondary.focus {
  box-shadow: 0 0 0 0.2rem rgba(108, 117, 125, 0.5);
}
bootstrap4.css
.btn-outline-secondary:not(:disabled):not(.disabled):active:focus, .btn-outline-secondary:not(:disabled):not(.disabled).active:focus,
.show > .btn-outline-secondary.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(108, 117, 125, 0.5);
}
bootstrap4.css
.btn-outline-success:focus, .btn-outline-success.focus {
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.5);
}
bootstrap4.css
.btn-outline-success:not(:disabled):not(.disabled):active:focus, .btn-outline-success:not(:disabled):not(.disabled).active:focus,
.show > .btn-outline-success.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.5);
}
bootstrap4.css
.btn-outline-info:focus, .btn-outline-info.focus {
  box-shadow: 0 0 0 0.2rem rgba(23, 162, 184, 0.5);
}
bootstrap4.css
.btn-outline-info:not(:disabled):not(.disabled):active:focus, .btn-outline-info:not(:disabled):not(.disabled).active:focus,
.show > .btn-outline-info.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(23, 162, 184, 0.5);
}
bootstrap4.css
.btn-outline-warning:focus, .btn-outline-warning.focus {
  box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.5);
}
bootstrap4.css
.btn-outline-warning:not(:disabled):not(.disabled):active:focus, .btn-outline-warning:not(:disabled):not(.disabled).active:focus,
.show > .btn-outline-warning.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.5);
}
bootstrap4.css
.btn-outline-danger:focus, .btn-outline-danger.focus {
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.5);
}
bootstrap4.css
.btn-outline-danger:not(:disabled):not(.disabled):active:focus, .btn-outline-danger:not(:disabled):not(.disabled).active:focus,
.show > .btn-outline-danger.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.5);
}
bootstrap4.css
.btn-outline-light:focus, .btn-outline-light.focus {
  box-shadow: 0 0 0 0.2rem rgba(248, 249, 250, 0.5);
}
bootstrap4.css
.btn-outline-light:not(:disabled):not(.disabled):active:focus, .btn-outline-light:not(:disabled):not(.disabled).active:focus,
.show > .btn-outline-light.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(248, 249, 250, 0.5);
}
bootstrap4.css
.btn-outline-dark:focus, .btn-outline-dark.focus {
  box-shadow: 0 0 0 0.2rem rgba(52, 58, 64, 0.5);
}
bootstrap4.css
.btn-outline-dark:not(:disabled):not(.disabled):active:focus, .btn-outline-dark:not(:disabled):not(.disabled).active:focus,
.show > .btn-outline-dark.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(52, 58, 64, 0.5);
}
bootstrap4.css
.btn-link:focus, .btn-link.focus {
  text-decoration: underline;
  box-shadow: none;
}
bootstrap4.css
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  display: none;
  float: left;
  min-width: 10rem;
  padding: 0.5rem 0;
  margin: 0.125rem 0 0;
  font-size: 1rem;
  color: #212529;
  text-align: left;
  list-style: none;
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 0.25rem;
}
bootstrap4.css
.btn-group,
.btn-group-vertical {
  position: relative;
  display: -ms-inline-flexbox;
  display: inline-flex;
  vertical-align: middle;
}
bootstrap4.css
.btn-toolbar {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -ms-flex-pack: start;
  justify-content: flex-start;
}
bootstrap4.css
.btn-group-toggle > .btn input[type="radio"],
.btn-group-toggle > .btn input[type="checkbox"],
.btn-group-toggle > .btn-group > .btn input[type="radio"],
.btn-group-toggle > .btn-group > .btn input[type="checkbox"] {
  position: absolute;
  clip: rect(0, 0, 0, 0);
  pointer-events: none;
}
bootstrap4.css
.input-group {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -ms-flex-align: stretch;
  align-items: stretch;
  width: 100%;
}
bootstrap4.css
.input-group > .custom-file {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
}
bootstrap4.css
.input-group-prepend,
.input-group-append {
  display: -ms-flexbox;
  display: flex;
}
bootstrap4.css
.input-group-text {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding: 0.375rem 0.75rem;
  margin-bottom: 0;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: #495057;
  text-align: center;
  white-space: nowrap;
  background-color: #e9ecef;
  border: 1px solid #ced4da;
  border-radius: 0.25rem;
}
bootstrap4.css
.input-group-text input[type="radio"],
.input-group-text input[type="checkbox"] {
  margin-top: 0;
}
bootstrap4.css
.custom-control-inline {
  display: -ms-inline-flexbox;
  display: inline-flex;
  margin-right: 1rem;
}
bootstrap4.css
.custom-control-input:focus ~ .custom-control-label::before {
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.custom-checkbox .custom-control-label::before {
  border-radius: 0.25rem;
}
bootstrap4.css
.custom-checkbox .custom-control-input:indeterminate ~ .custom-control-label::before {
  border-color: #007bff;
  background-color: #007bff;
}
bootstrap4.css
.custom-checkbox .custom-control-input:disabled:checked ~ .custom-control-label::before {
  background-color: rgba(0, 123, 255, 0.5);
}
bootstrap4.css
.custom-checkbox .custom-control-input:disabled:indeterminate ~ .custom-control-label::before {
  background-color: rgba(0, 123, 255, 0.5);
}
bootstrap4.css
.custom-switch .custom-control-label::after {
  top: calc(0.25rem + 2px);
  left: calc(-2.25rem + 2px);
  width: calc(1rem - 4px);
  height: calc(1rem - 4px);
  background-color: #adb5bd;
  border-radius: 0.5rem;
  transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, -webkit-transform 0.15s ease-in-out;
  transition: transform 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  transition: transform 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, -webkit-transform 0.15s ease-in-out;
}
bootstrap4.css
.custom-select:focus {
  border-color: #80bdff;
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.custom-file-input:focus ~ .custom-file-label {
  border-color: #80bdff;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.custom-range:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 1px #fff, 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.custom-range:focus::-moz-range-thumb {
  box-shadow: 0 0 0 1px #fff, 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.custom-range:focus::-ms-thumb {
  box-shadow: 0 0 0 1px #fff, 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.custom-range::-webkit-slider-thumb {
  width: 1rem;
  height: 1rem;
  margin-top: -0.25rem;
  background-color: #007bff;
  border: 0;
  border-radius: 1rem;
  transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  -webkit-appearance: none;
  appearance: none;
}
bootstrap4.css
.custom-range::-moz-range-thumb {
  width: 1rem;
  height: 1rem;
  background-color: #007bff;
  border: 0;
  border-radius: 1rem;
  transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  -moz-appearance: none;
  appearance: none;
}
bootstrap4.css
.custom-range::-ms-thumb {
  width: 1rem;
  height: 1rem;
  margin-top: 0;
  margin-right: 0.2rem;
  margin-left: 0.2rem;
  background-color: #007bff;
  border: 0;
  border-radius: 1rem;
  transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  appearance: none;
}
bootstrap4.css
.custom-control-label::before,
.custom-file-label,
.custom-select {
  transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
bootstrap4.css
.nav {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;
}
bootstrap4.css
.navbar {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -ms-flex-align: center;
  align-items: center;
  -ms-flex-pack: justify;
  justify-content: space-between;
  padding: 0.5rem 1rem;
}
bootstrap4.css
.navbar > .container,
.navbar > .container-fluid {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -ms-flex-align: center;
  align-items: center;
  -ms-flex-pack: justify;
  justify-content: space-between;
}
bootstrap4.css
.navbar-nav {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;
}
bootstrap4.css
@media (min-width: 576px) {
  .navbar-expand-sm {
    -ms-flex-flow: row nowrap;
    flex-flow: row nowrap;
    -ms-flex-pack: start;
    justify-content: flex-start;
  }
  .navbar-expand-sm .navbar-nav {
    -ms-flex-direction: row;
    flex-direction: row;
  }
  .navbar-expand-sm .navbar-nav .dropdown-menu {
    position: absolute;
  }
  .navbar-expand-sm .navbar-nav .nav-link {
    padding-right: 0.5rem;
    padding-left: 0.5rem;
  }
  .navbar-expand-sm > .container,
  .navbar-expand-sm > .container-fluid {
    -ms-flex-wrap: nowrap;
    flex-wrap: nowrap;
  }
  .navbar-expand-sm .navbar-collapse {
    display: -ms-flexbox !important;
    display: flex !important;
    -ms-flex-preferred-size: auto;
    flex-basis: auto;
  }
  .navbar-expand-sm .navbar-toggler {
    display: none;
  }
}
bootstrap4.css
@media (min-width: 768px) {
  .navbar-expand-md {
    -ms-flex-flow: row nowrap;
    flex-flow: row nowrap;
    -ms-flex-pack: start;
    justify-content: flex-start;
  }
  .navbar-expand-md .navbar-nav {
    -ms-flex-direction: row;
    flex-direction: row;
  }
  .navbar-expand-md .navbar-nav .dropdown-menu {
    position: absolute;
  }
  .navbar-expand-md .navbar-nav .nav-link {
    padding-right: 0.5rem;
    padding-left: 0.5rem;
  }
  .navbar-expand-md > .container,
  .navbar-expand-md > .container-fluid {
    -ms-flex-wrap: nowrap;
    flex-wrap: nowrap;
  }
  .navbar-expand-md .navbar-collapse {
    display: -ms-flexbox !important;
    display: flex !important;
    -ms-flex-preferred-size: auto;
    flex-basis: auto;
  }
  .navbar-expand-md .navbar-toggler {
    display: none;
  }
}
bootstrap4.css
@media (min-width: 992px) {
  .navbar-expand-lg {
    -ms-flex-flow: row nowrap;
    flex-flow: row nowrap;
    -ms-flex-pack: start;
    justify-content: flex-start;
  }
  .navbar-expand-lg .navbar-nav {
    -ms-flex-direction: row;
    flex-direction: row;
  }
  .navbar-expand-lg .navbar-nav .dropdown-menu {
    position: absolute;
  }
  .navbar-expand-lg .navbar-nav .nav-link {
    padding-right: 0.5rem;
    padding-left: 0.5rem;
  }
  .navbar-expand-lg > .container,
  .navbar-expand-lg > .container-fluid {
    -ms-flex-wrap: nowrap;
    flex-wrap: nowrap;
  }
  .navbar-expand-lg .navbar-collapse {
    display: -ms-flexbox !important;
    display: flex !important;
    -ms-flex-preferred-size: auto;
    flex-basis: auto;
  }
  .navbar-expand-lg .navbar-toggler {
    display: none;
  }
}
bootstrap4.css
@media (min-width: 1200px) {
  .navbar-expand-xl {
    -ms-flex-flow: row nowrap;
    flex-flow: row nowrap;
    -ms-flex-pack: start;
    justify-content: flex-start;
  }
  .navbar-expand-xl .navbar-nav {
    -ms-flex-direction: row;
    flex-direction: row;
  }
  .navbar-expand-xl .navbar-nav .dropdown-menu {
    position: absolute;
  }
  .navbar-expand-xl .navbar-nav .nav-link {
    padding-right: 0.5rem;
    padding-left: 0.5rem;
  }
  .navbar-expand-xl > .container,
  .navbar-expand-xl > .container-fluid {
    -ms-flex-wrap: nowrap;
    flex-wrap: nowrap;
  }
  .navbar-expand-xl .navbar-collapse {
    display: -ms-flexbox !important;
    display: flex !important;
    -ms-flex-preferred-size: auto;
    flex-basis: auto;
  }
  .navbar-expand-xl .navbar-toggler {
    display: none;
  }
}
bootstrap4.css
.navbar-expand .navbar-collapse {
  display: -ms-flexbox !important;
  display: flex !important;
  -ms-flex-preferred-size: auto;
  flex-basis: auto;
}
bootstrap4.css
.card {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
  min-width: 0;
  word-wrap: break-word;
  background-color: #fff;
  background-clip: border-box;
  border: 1px solid rgba(0, 0, 0, 0.125);
  border-radius: 0.25rem;
}
bootstrap4.css
.card-deck {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
}
bootstrap4.css
@media (min-width: 576px) {
  .card-deck {
    -ms-flex-flow: row wrap;
    flex-flow: row wrap;
    margin-right: -15px;
    margin-left: -15px;
  }
  .card-deck .card {
    display: -ms-flexbox;
    display: flex;
    -ms-flex: 1 0 0%;
    flex: 1 0 0%;
    -ms-flex-direction: column;
    flex-direction: column;
    margin-right: 15px;
    margin-bottom: 0;
    margin-left: 15px;
  }
}
bootstrap4.css
.card-group {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
}
bootstrap4.css
.breadcrumb {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  list-style: none;
  background-color: #e9ecef;
  border-radius: 0.25rem;
}
bootstrap4.css
.pagination {
  display: -ms-flexbox;
  display: flex;
  padding-left: 0;
  list-style: none;
  border-radius: 0.25rem;
}
bootstrap4.css
.page-link:focus {
  z-index: 2;
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
bootstrap4.css
.badge {
  display: inline-block;
  padding: 0.25em 0.4em;
  font-size: 75%;
  font-weight: 700;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: 0.25rem;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
bootstrap4.css
a.badge-primary:focus, a.badge-primary.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.5);
}
bootstrap4.css
a.badge-secondary:focus, a.badge-secondary.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(108, 117, 125, 0.5);
}
bootstrap4.css
a.badge-success:focus, a.badge-success.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.5);
}
bootstrap4.css
a.badge-info:focus, a.badge-info.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(23, 162, 184, 0.5);
}
bootstrap4.css
a.badge-warning:focus, a.badge-warning.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.5);
}
bootstrap4.css
a.badge-danger:focus, a.badge-danger.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.5);
}
bootstrap4.css
a.badge-light:focus, a.badge-light.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(248, 249, 250, 0.5);
}
bootstrap4.css
a.badge-dark:focus, a.badge-dark.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(52, 58, 64, 0.5);
}
bootstrap4.css
.progress {
  display: -ms-flexbox;
  display: flex;
  height: 1rem;
  overflow: hidden;
  font-size: 0.75rem;
  background-color: #e9ecef;
  border-radius: 0.25rem;
}
bootstrap4.css
.progress-bar {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
  -ms-flex-pack: center;
  justify-content: center;
  color: #fff;
  text-align: center;
  white-space: nowrap;
  background-color: #007bff;
  transition: width 0.6s ease;
}
bootstrap4.css
.media {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: start;
  align-items: flex-start;
}
bootstrap4.css
.list-group {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
  padding-left: 0;
  margin-bottom: 0;
}
bootstrap4.css
.toast {
  max-width: 350px;
  overflow: hidden;
  font-size: 0.875rem;
  background-color: rgba(255, 255, 255, 0.85);
  background-clip: padding-box;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.1);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  opacity: 0;
  border-radius: 0.25rem;
}
bootstrap4.css
.toast-header {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding: 0.25rem 0.75rem;
  color: #6c757d;
  background-color: rgba(255, 255, 255, 0.85);
  background-clip: padding-box;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}
bootstrap4.css
.modal-dialog-scrollable {
  display: -ms-flexbox;
  display: flex;
  max-height: calc(100% - 1rem);
}
bootstrap4.css
.modal-dialog-centered {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  min-height: calc(100% - 1rem);
}
bootstrap4.css
.modal-content {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
  width: 100%;
  pointer-events: auto;
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 0.3rem;
  outline: 0;
}
bootstrap4.css
.modal-header {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: start;
  align-items: flex-start;
  -ms-flex-pack: justify;
  justify-content: space-between;
  padding: 1rem 1rem;
  border-bottom: 1px solid #dee2e6;
  border-top-left-radius: 0.3rem;
  border-top-right-radius: 0.3rem;
}
bootstrap4.css
.modal-footer {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  -ms-flex-pack: end;
  justify-content: flex-end;
  padding: 1rem;
  border-top: 1px solid #dee2e6;
  border-bottom-right-radius: 0.3rem;
  border-bottom-left-radius: 0.3rem;
}
bootstrap4.css
.popover {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1060;
  display: block;
  max-width: 276px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-style: normal;
  font-weight: 400;
  line-height: 1.5;
  text-align: left;
  text-align: start;
  text-decoration: none;
  text-shadow: none;
  text-transform: none;
  letter-spacing: normal;
  word-break: normal;
  word-spacing: normal;
  white-space: normal;
  line-break: auto;
  font-size: 0.875rem;
  word-wrap: break-word;
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 0.3rem;
}
bootstrap4.css
.carousel-control-prev,
.carousel-control-next {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 1;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  -ms-flex-pack: center;
  justify-content: center;
  width: 15%;
  color: #fff;
  text-align: center;
  opacity: 0.5;
  transition: opacity 0.15s ease;
}
bootstrap4.css
.carousel-indicators {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 15;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-pack: center;
  justify-content: center;
  padding-left: 0;
  margin-right: 15%;
  margin-left: 15%;
  list-style: none;
}
bootstrap4.css
.carousel-indicators li {
  box-sizing: content-box;
  -ms-flex: 0 1 auto;
  flex: 0 1 auto;
  width: 30px;
  height: 3px;
  margin-right: 3px;
  margin-left: 3px;
  text-indent: -999px;
  cursor: pointer;
  background-color: #fff;
  background-clip: padding-box;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  opacity: .5;
  transition: opacity 0.6s ease;
}
bootstrap4.css
.d-flex {
  display: -ms-flexbox !important;
  display: flex !important;
}
bootstrap4.css
.d-inline-flex {
  display: -ms-inline-flexbox !important;
  display: inline-flex !important;
}
bootstrap4.css
@media (min-width: 576px) {
  .d-sm-none {
    display: none !important;
  }
  .d-sm-inline {
    display: inline !important;
  }
  .d-sm-inline-block {
    display: inline-block !important;
  }
  .d-sm-block {
    display: block !important;
  }
  .d-sm-table {
    display: table !important;
  }
  .d-sm-table-row {
    display: table-row !important;
  }
  .d-sm-table-cell {
    display: table-cell !important;
  }
  .d-sm-flex {
    display: -ms-flexbox !important;
    display: flex !important;
  }
  .d-sm-inline-flex {
    display: -ms-inline-flexbox !important;
    display: inline-flex !important;
  }
}
bootstrap4.css
@media (min-width: 768px) {
  .d-md-none {
    display: none !important;
  }
  .d-md-inline {
    display: inline !important;
  }
  .d-md-inline-block {
    display: inline-block !important;
  }
  .d-md-block {
    display: block !important;
  }
  .d-md-table {
    display: table !important;
  }
  .d-md-table-row {
    display: table-row !important;
  }
  .d-md-table-cell {
    display: table-cell !important;
  }
  .d-md-flex {
    display: -ms-flexbox !important;
    display: flex !important;
  }
  .d-md-inline-flex {
    display: -ms-inline-flexbox !important;
    display: inline-flex !important;
  }
}
bootstrap4.css
@media (min-width: 992px) {
  .d-lg-none {
    display: none !important;
  }
  .d-lg-inline {
    display: inline !important;
  }
  .d-lg-inline-block {
    display: inline-block !important;
  }
  .d-lg-block {
    display: block !important;
  }
  .d-lg-table {
    display: table !important;
  }
  .d-lg-table-row {
    display: table-row !important;
  }
  .d-lg-table-cell {
    display: table-cell !important;
  }
  .d-lg-flex {
    display: -ms-flexbox !important;
    display: flex !important;
  }
  .d-lg-inline-flex {
    display: -ms-inline-flexbox !important;
    display: inline-flex !important;
  }
}
bootstrap4.css
@media (min-width: 1200px) {
  .d-xl-none {
    display: none !important;
  }
  .d-xl-inline {
    display: inline !important;
  }
  .d-xl-inline-block {
    display: inline-block !important;
  }
  .d-xl-block {
    display: block !important;
  }
  .d-xl-table {
    display: table !important;
  }
  .d-xl-table-row {
    display: table-row !important;
  }
  .d-xl-table-cell {
    display: table-cell !important;
  }
  .d-xl-flex {
    display: -ms-flexbox !important;
    display: flex !important;
  }
  .d-xl-inline-flex {
    display: -ms-inline-flexbox !important;
    display: inline-flex !important;
  }
}
bootstrap4.css
@media print {
  .d-print-none {
    display: none !important;
  }
  .d-print-inline {
    display: inline !important;
  }
  .d-print-inline-block {
    display: inline-block !important;
  }
  .d-print-block {
    display: block !important;
  }
  .d-print-table {
    display: table !important;
  }
  .d-print-table-row {
    display: table-row !important;
  }
  .d-print-table-cell {
    display: table-cell !important;
  }
  .d-print-flex {
    display: -ms-flexbox !important;
    display: flex !important;
  }
  .d-print-inline-flex {
    display: -ms-inline-flexbox !important;
    display: inline-flex !important;
  }
}
bootstrap4.css
.shadow-sm {
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}
bootstrap4.css
.shadow {
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}
bootstrap4.css
.shadow-lg {
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175) !important;
}
bootstrap4.css
.shadow-none {
  box-shadow: none !important;
}
bootstrap4.css
@media print {
  *,
  *::before,
  *::after {
    text-shadow: none !important;
    box-shadow: none !important;
  }
  a:not(.btn) {
    text-decoration: underline;
  }
  abbr[title]::after {
    content: " (" attr(title) ")";
  }
  pre {
    white-space: pre-wrap !important;
  }
  pre,
  blockquote {
    border: 1px solid #adb5bd;
    page-break-inside: avoid;
  }
  thead {
    display: table-header-group;
  }
  tr,
  img {
    page-break-inside: avoid;
  }
  p,
  h2,
  h3 {
    orphans: 3;
    widows: 3;
  }
  h2,
  h3 {
    page-break-after: avoid;
  }
  @page {
    size: a3;
  }
  body {
    min-width: 992px !important;
  }
  .container {
    min-width: 992px !important;
  }
  .navbar {
    display: none;
  }
  .badge {
    border: 1px solid #000;
  }
  .table {
    border-collapse: co
■ドロップダウン:dropdown-menu:コンポーネント:ドロップダウンメニューを表示させるスペースがない場合に、反対側に表示させる






  <div class="box" style="overflow: auto">
    <br><br><br><br><br>
    <div class="dropdown">
      <button class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" data-flip="true">ドロップダウンボタン</button>
      <div class="dropdown-menu">
        <a class="dropdown-item" href="#">メニュー1</a>
        <a class="dropdown-item" href="#">メニュー2</a>
        <a class="dropdown-item" href="#">メニュー3</a>
      </div>
    </div>
  </div>
■ドロップダウン:dropdown-menu:コンポーネント:ドロップダウンメニューに様々な要素を追加する

  <div class="btn-group">
    <!-- 切り替えボタン -->
    <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">ドロップダウン</button>
    <!-- ドロップダウンメニュー -->
    <div class="dropdown-menu">
      <h6 class="dropdown-header">ドロップダウンメニューのタイトル</h6>
      <form class="px-4 py-3">
        <div class="form-group">
          <label for="email">メールアドレス</label>
          <input type="email" class="form-control" id="email" placeholder="email@example.com"> </div>
        <div class="form-group">
          <label for="password">パスワード</label>
          <input type="password" class="form-control" id="password" placeholder="Password"> </div>
        <div class="form-check">
          <input type="checkbox" class="form-check-input" id="check">
          <label class="form-check-label" for="check"> ログイン情報を記憶 </label>
        </div>
        <button type="submit" class="btn btn-secondary">ログイン</button>
      </form>
      <div class="dropdown-divider"></div>
      <a class="dropdown-item" href="#">初めての方</a>
      <a class="dropdown-item" href="#">パスワードをお忘れの方</a>
    </div>
  </div>
■ドロップダウン:dropdown-menu:js:自動サイズ調整のカラムを作成する col-auto

@
  <form>
    <div class="form-row align-items-center">
      <div class="col-auto">
        <label class="sr-only" for="inputName">氏名</label>
        <input type="text" class="form-control mb-2" id="inputName" placeholder="氏名を入力">
      </div>
      <div class="col-auto">
        <label class="sr-only" for="inputUsername">ユーザーネーム</label>
        <div class="input-group mb-2">
          <div class="input-group-prepend">
            <div class="input-group-text">@</div>
          </div>
          <input type="text" class="form-control" id="inputUsername" placeholder="ユーザーネームを入力">
        </div>
      </div>
      <div class="col-auto">
        <div class="form-check mb-2">
          <input type="checkbox" class="form-check-input" id="check">
          <label class="form-check-label" for="check"> チェックする </label>
        </div>
      </div>
      <div class="col-auto">
        <button type="submit" class="btn btn-primary mb-2">送信</button>
      </div>
    </div>
  </form>
■フォーム:form-group:コンポーネント:フォームの基本要素

キャリアメールは届かない場合があります。
  <form>
    <div class="form-group">
      <label for="email1">メールアドレス</label>
      <input type="email" class="form-control" id="email1" aria-describedby="emailHelp" placeholder="メールアドレスを入力">
      <small id="emailHelp" class="form-text text-muted">キャリアメールは届かない場合があります。</small>
    </div>
    <div class="form-group">
      <label for="password1">パスワード</label>
      <input type="password" class="form-control" id="password1" placeholder="パスワードを入力"> </div>
    <div class="form-group">
      <label for="select1">プルダウンメニューから選んでください</label>
      <select class="form-control" id="select1">
        <option>メニュー1</option>
        <option>メニュー2</option>
        <option>メニュー3</option>
        <option>メニュー4</option>
        <option>メニュー5</option>
      </select>
    </div>
    <!-- 複数選択のプルダウンメニュー -->
    <div class="form-group">
      <label for="select2">複数選択のプルダウンメニュー</label>
      <select multiple class="form-control" id="select2">
        <option>複数選択可A</option>
        <option>複数選択可B</option>
        <option>複数選択可C</option>
        <option>複数選択可D</option>
        <option>複数選択可E</option>
      </select>
    </div>
    <div class="form-group">
      <label for="textarea1">複数行のテキスト入力欄</label>
      <textarea class="form-control" id="textarea1" rows="3"></textarea>
    </div>
    <div class="form-group">
      <label for="file1">ファイルを選択</label>
      <input type="file" class="form-control-file" id="file1"> 
    </div>
    <div class="form-check">
      <input type="checkbox" class="form-check-input" id="checkbox01">
      <label class="form-check-label" for="">チェックする</label>
    </div>
    <button type="submit" class="btn btn-primary">送信</button>
  </form>
■フォーム:form-group:コンポーネント:カスタムフォームのチェックボックスに不確定(indeterminate)を指定する

  <form>
    <!-- カスタムフォームのチェックボックス -->
    <div class="custom-control custom-checkbox mb-3">
      <input type="checkbox" class="custom-control-input" id="checkbox08" checked>
      <label class="custom-control-label" for="checkbox08">選択済み</label>
    </div>
    <div class="custom-control custom-checkbox mb-3">
      <input type="checkbox" class="custom-control-input" id="checkbox09" unchecked>
      <label class="custom-control-label" for="checkbox09">未選択</label>
    </div>
    <div class="custom-control custom-checkbox mb-3">
      <input type="checkbox" class="custom-control-input indeterminate-box" id="checkbox10">
      <label class="custom-control-label" for="checkbox10">不確定</label>
    </div>
  </form>
■フォーム:form-group:コンポーネント:カスタムフォームのチェックボックスとラジオボタンを無効にする

  <form>
    <!-- チェックボックスを無効にする -->
    <div class="custom-control custom-checkbox">
      <input type="checkbox" class="custom-control-input" id="checkbox11" disabled>
      <label class="custom-control-label" for="checkbox11">
        チェック(無効)
      </label>
    </div>
    <!-- ラジオボタンを無効にする -->
    <div class="custom-control custom-radio">
      <input type="radio" name="radioDisabled" id="checkbox12" class="custom-control-input" disabled>
      <label class="custom-control-label" for="checkbox12">
        オプション(無効)
      </label>
    </div>
  </form>
■フォーム:form-group:コンポーネント:カスタムフォームのチェックボックスとラジオボタンを作成する

  <form>
    <!-- カスタムフォームのチェックボックス -->
    <div class="custom-control custom-checkbox mb-3">
      <input type="checkbox" class="custom-control-input" id="checkbox13">
      <label class="custom-control-label" for="checkbox13">チェックする</label>
    </div>
    <!-- カスタムフォームのラジオボタン -->
    <div class="custom-control custom-radio">
      <input type="radio" id="option1" name="option" class="custom-control-input">
      <label class="custom-control-label" for="option1">オプション1</label>
    </div>
    <div class="custom-control custom-radio">
      <input type="radio" id="option2" name="option" class="custom-control-input">
      <label class="custom-control-label" for="option2">オプション2</label>
    </div>
  </form>
■フォーム:form-group:コンポーネント:コンパクトなカラム間隔のフォーム form-row form-group col-md-6

  <form>
    <div class="form-row">
      <div class="form-group col-md-6">
        <label for="inputEmail">メールアドレス</label>
        <input type="email" class="form-control" id="inputEmail" placeholder="メールアドレスを入力"> </div>
      <div class="form-group col-md-6">
        <label for="inputPassword">パスワード</label>
        <input type="password" class="form-control" id="inputPassword" placeholder="パスワードを入力"> </div>
    </div>
    <div class="form-row">
      <div class="form-group col-md-4">
        <label for="inputState">国</label>
        <select id="inputState" class="form-control">
          <option selected>Choose...</option>
          <option>...</option>
        </select>
      </div>
      <div class="form-group col-md-2">
        <label for="inputZip">郵便番号</label>
        <input type="text" class="form-control" id="inputZip"> </div>
      <div class="form-group col-md-6">
        <label for="inputCity">都道府県</label>
        <input type="text" class="form-control" id="inputCity"> </div>
    </div>
    <div class="form-group">
      <label for="inputAddress1">住所1</label>
      <input type="text" class="form-control" id="inputAddress1" placeholder="市町村"> </div>
    <div class="form-group">
      <label for="inputAddress2">住所2</label>
      <input type="text" class="form-control" id="inputAddress2" placeholder="マンション名"> </div>
    <div class="form-group">
      <div class="form-check">
        <input class="form-check-input" type="checkbox" id="check">
        <label class="form-check-label" for="check">チェックする</label>
      </div>
    </div>
    <button type="submit" class="btn btn-primary">サインイン</button>
  </form>
■フォーム:form-group:コンポーネント:一連の入力グループをまとめて無効にする

  <form>
    <fieldset disabled>
      <div class="form-group">
        <label for="disabledTextInput">無効な入力欄</label>
        <input type="text" id="disabledTextInput" class="form-control" placeholder="Disabled input"> </div>
      <div class="form-group">
        <label for="disabledSelect">無効なプルダウンメニュー</label>
        <select id="disabledSelect" class="form-control">
          <option>Disabled select</option>
        </select>
      </div>
      <div class="form-check">
        <input class="form-check-input" type="checkbox" id="disabledCheck" disabled>
        <label class="form-check-label" for="disabledCheck">無効なチェックボックス</label>
      </div>
      <button type="submit" class="btn btn-primary">無効な送信ボタン</button>
    </fieldset>
  </form>
■フォーム:form-group:コンポーネント:水平配置のフォームを作成する

ラジオボタン
チェックボックス
  <form>
    <div class="form-group row">
      <label for="inputEmail" class="col-sm-2 col-form-label">メールアドレス</label>
      <div class="col-sm-10">
        <input type="email" class="form-control" id="inputEmail" placeholder="メールアドレスを入力">
      </div>
    </div>
    <div class="form-group row">
      <label for="inputPassword" class="col-sm-2 col-form-label">パスワード</label>
      <div class="col-sm-10">
        <input type="password" class="form-control" id="inputPassword" placeholder="パスワードを入力">
      </div>
    </div>
    <fieldset class="form-group">
      <div class="row">
        <legend class="col-form-label col-sm-2 pt-0">ラジオボタン</legend>
        <div class="col-sm-10">
          <div class="form-check">
            <input class="form-check-input" type="radio" name="radios" id="radios1" value="option1" checked>
            <label class="form-check-label" for="radios1">
              オプション1
            </label>
          </div>
          <div class="form-check">
            <input class="form-check-input" type="radio" name="radios" id="radios2" value="option2">
            <label class="form-check-label" for="radios2">
              オプション2
            </label>
          </div>
          <div class="form-check">
            <input class="form-check-input" type="radio" name="radios" id="radios3" value="option3" disabled>
            <label class="form-check-label" for="radios3">
              オプション3(無効)
            </label>
          </div>
        </div>
      </div>
    </fieldset>
    <div class="form-group row">
      <div class="col-sm-2">チェックボックス</div>
      <div class="col-sm-10">
        <div class="form-check">
          <input class="form-check-input" type="checkbox" id="check1">
          <label class="form-check-label" for="check1">
            チェックする
          </label>
        </div>
      </div>
    </div>
    <div class="form-group row">
      <div class="col-sm-10">
        <button type="submit" class="btn btn-primary">サインイン</button>
      </div>
    </div>
  </form>
■フォーム:form-group:コンポーネント:インラインのフォームを作成する

@
  <form class="form-inline">
    <label class="sr-only" for="name">氏名</label>
    <input type="text" class="form-control mb-2 mr-sm-2" id="name" placeholder="氏名を入力">
    <label class="sr-only" for="username">ユーザーネーム</label>
    <div class="input-group mb-2 mr-sm-2">
      <div class="input-group-prepend">
        <div class="input-group-text">@</div>
      </div>
      <input type="text" class="form-control" id="username" placeholder="ユーザーネームを入力">
    </div>
    <div class="form-check mb-2 mr-sm-2">
      <input class="form-check-input" type="checkbox" id="checkbox20">
      <label class="form-check-label" for="checkbox20">
        チェックする
      </label>
    </div>
    <button type="submit" class="btn btn-primary mb-2">送信</button>
  </form>
■フォーム:form-group:コンポーネント:入力グループ アドオンをチェックボックスやラジオボタンにする

      <div class="input-group mb-3">
        <div class="input-group-prepend">
          <div class="input-group-text">
            <input type="checkbox" aria-label="次のテキスト入力用のチェックボックス">
          </div>
        </div>
        <input type="text" class="form-control" aria-label="チェックボックス付テキスト入力欄">
      </div>
      <!-- ラジオボタン付きテキスト入力欄 -->
      <div class="input-group">
        <div class="input-group-prepend">
          <div class="input-group-text">
            <input type="radio" aria-label="次のテキスト入力用のラジオボタン">
          </div>
        </div>
        <input type="text" class="form-control" aria-label="ラジオボタン付テキスト入力欄">
      </div>
■フォーム:form-group:コンポーネント:入力グループ 複数のアドオンを組み合わせる

$ 0.00
$ 0.00
      <div class="input-group mb-3">
        <div class="input-group-prepend">
          <div class="input-group-text">
            <input type="radio" aria-label="次のテキスト入力用のラジオボタン"> </div> <span class="input-group-text">$</span> <span class="input-group-text">0.00</span> </div>
        <input type="text" class="form-control" aria-label="金額"> </div>
      <div class="input-group">
        <input type="text" class="form-control" aria-label="金額">
        <div class="input-group-append"> <span class="input-group-text">$</span> <span class="input-group-text">0.00</span>
          <div class="input-group-text">
            <input type="checkbox" aria-label="前のテキスト入力用のチェックボックス"> 
          </div>
        </div>
      </div>
■ボタン:button:コンポーネント:チェックボックスをボタン変更する data-toggle=buttons

  <div class="btn-group" data-toggle="buttons">
    <label class="btn btn-secondary active">
      <input type="checkbox" checked autocomplete="off">チェック1
    </label>
    <label class="btn btn-secondary">
      <input type="checkbox" autocomplete="off">チェック2
    </label>
    <label class="btn btn-secondary">
      <input type="checkbox" autocomplete="off">チェック3
    </label>
  </div>