m-auto

bootstrap4.css

bootstrap4.css
.col-1,
.col-2,
.col-3,
.col-4,
.col-5,
.col-6,
.col-7,
.col-8,
.col-9,
.col-10,
.col-11,
.col-12,
.col,
.col-auto,
.col-sm-1,
.col-sm-2,
.col-sm-3,
.col-sm-4,
.col-sm-5,
.col-sm-6,
.col-sm-7,
.col-sm-8,
.col-sm-9,
.col-sm-10,
.col-sm-11,
.col-sm-12,
.col-sm,
.col-sm-auto,
.col-md-1,
.col-md-2,
.col-md-3,
.col-md-4,
.col-md-5,
.col-md-6,
.col-md-7,
.col-md-8,
.col-md-9,
.col-md-10,
.col-md-11,
.col-md-12,
.col-md,
.col-md-auto,
.col-lg-1,
.col-lg-2,
.col-lg-3,
.col-lg-4,
.col-lg-5,
.col-lg-6,
.col-lg-7,
.col-lg-8,
.col-lg-9,
.col-lg-10,
.col-lg-11,
.col-lg-12,
.col-lg,
.col-lg-auto,
.col-xl-1,
.col-xl-2,
.col-xl-3,
.col-xl-4,
.col-xl-5,
.col-xl-6,
.col-xl-7,
.col-xl-8,
.col-xl-9,
.col-xl-10,
.col-xl-11,
.col-xl-12,
.col-xl,
.col-xl-auto {
  position: relative;
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
}
bootstrap4.css
@media (min-width: 576px) {
  .col-sm {
    -ms-flex-preferred-size: 0;
    flex-basis: 0;
    -ms-flex-positive: 1;
    flex-grow: 1;
    max-width: 100%;
  }
  .col-sm-auto {
    -ms-flex: 0 0 auto;
    flex: 0 0 auto;
    width: auto;
    max-width: 100%;
  }
  .col-sm-1 {
    -ms-flex: 0 0 8.333333%;
    flex: 0 0 8.333333%;
    max-width: 8.333333%;
  }
  .col-sm-2 {
    -ms-flex: 0 0 16.666667%;
    flex: 0 0 16.666667%;
    max-width: 16.666667%;
  }
  .col-sm-3 {
    -ms-flex: 0 0 25%;
    flex: 0 0 25%;
    max-width: 25%;
  }
  .col-sm-4 {
    -ms-flex: 0 0 33.333333%;
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
  }
  .col-sm-5 {
    -ms-flex: 0 0 41.666667%;
    flex: 0 0 41.666667%;
    max-width: 41.666667%;
  }
  .col-sm-6 {
    -ms-flex: 0 0 50%;
    flex: 0 0 50%;
    max-width: 50%;
  }
  .col-sm-7 {
    -ms-flex: 0 0 58.333333%;
    flex: 0 0 58.333333%;
    max-width: 58.333333%;
  }
  .col-sm-8 {
    -ms-flex: 0 0 66.666667%;
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
  }
  .col-sm-9 {
    -ms-flex: 0 0 75%;
    flex: 0 0 75%;
    max-width: 75%;
  }
  .col-sm-10 {
    -ms-flex: 0 0 83.333333%;
    flex: 0 0 83.333333%;
    max-width: 83.333333%;
  }
  .col-sm-11 {
    -ms-flex: 0 0 91.666667%;
    flex: 0 0 91.666667%;
    max-width: 91.666667%;
  }
  .col-sm-12 {
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    max-width: 100%;
  }
  .order-sm-first {
    -ms-flex-order: -1;
    order: -1;
  }
  .order-sm-last {
    -ms-flex-order: 13;
    order: 13;
  }
  .order-sm-0 {
    -ms-flex-order: 0;
    order: 0;
  }
  .order-sm-1 {
    -ms-flex-order: 1;
    order: 1;
  }
  .order-sm-2 {
    -ms-flex-order: 2;
    order: 2;
  }
  .order-sm-3 {
    -ms-flex-order: 3;
    order: 3;
  }
  .order-sm-4 {
    -ms-flex-order: 4;
    order: 4;
  }
  .order-sm-5 {
    -ms-flex-order: 5;
    order: 5;
  }
  .order-sm-6 {
    -ms-flex-order: 6;
    order: 6;
  }
  .order-sm-7 {
    -ms-flex-order: 7;
    order: 7;
  }
  .order-sm-8 {
    -ms-flex-order: 8;
    order: 8;
  }
  .order-sm-9 {
    -ms-flex-order: 9;
    order: 9;
  }
  .order-sm-10 {
    -ms-flex-order: 10;
    order: 10;
  }
  .order-sm-11 {
    -ms-flex-order: 11;
    order: 11;
  }
  .order-sm-12 {
    -ms-flex-order: 12;
    order: 12;
  }
  .offset-sm-0 {
    margin-left: 0;
  }
  .offset-sm-1 {
    margin-left: 8.333333%;
  }
  .offset-sm-2 {
    margin-left: 16.666667%;
  }
  .offset-sm-3 {
    margin-left: 25%;
  }
  .offset-sm-4 {
    margin-left: 33.333333%;
  }
  .offset-sm-5 {
    margin-left: 41.666667%;
  }
  .offset-sm-6 {
    margin-left: 50%;
  }
  .offset-sm-7 {
    margin-left: 58.333333%;
  }
  .offset-sm-8 {
    margin-left: 66.666667%;
  }
  .offset-sm-9 {
    margin-left: 75%;
  }
  .offset-sm-10 {
    margin-left: 83.333333%;
  }
  .offset-sm-11 {
    margin-left: 91.666667%;
  }
}
bootstrap4.css
@media (min-width: 576px) {
  .flex-sm-row {
    -ms-flex-direction: row !important;
    flex-direction: row !important;
  }
  .flex-sm-column {
    -ms-flex-direction: column !important;
    flex-direction: column !important;
  }
  .flex-sm-row-reverse {
    -ms-flex-direction: row-reverse !important;
    flex-direction: row-reverse !important;
  }
  .flex-sm-column-reverse {
    -ms-flex-direction: column-reverse !important;
    flex-direction: column-reverse !important;
  }
  .flex-sm-wrap {
    -ms-flex-wrap: wrap !important;
    flex-wrap: wrap !important;
  }
  .flex-sm-nowrap {
    -ms-flex-wrap: nowrap !important;
    flex-wrap: nowrap !important;
  }
  .flex-sm-wrap-reverse {
    -ms-flex-wrap: wrap-reverse !important;
    flex-wrap: wrap-reverse !important;
  }
  .flex-sm-fill {
    -ms-flex: 1 1 auto !important;
    flex: 1 1 auto !important;
  }
  .flex-sm-grow-0 {
    -ms-flex-positive: 0 !important;
    flex-grow: 0 !important;
  }
  .flex-sm-grow-1 {
    -ms-flex-positive: 1 !important;
    flex-grow: 1 !important;
  }
  .flex-sm-shrink-0 {
    -ms-flex-negative: 0 !important;
    flex-shrink: 0 !important;
  }
  .flex-sm-shrink-1 {
    -ms-flex-negative: 1 !important;
    flex-shrink: 1 !important;
  }
  .justify-content-sm-start {
    -ms-flex-pack: start !important;
    justify-content: flex-start !important;
  }
  .justify-content-sm-end {
    -ms-flex-pack: end !important;
    justify-content: flex-end !important;
  }
  .justify-content-sm-center {
    -ms-flex-pack: center !important;
    justify-content: center !important;
  }
  .justify-content-sm-between {
    -ms-flex-pack: justify !important;
    justify-content: space-between !important;
  }
  .justify-content-sm-around {
    -ms-flex-pack: distribute !important;
    justify-content: space-around !important;
  }
  .align-items-sm-start {
    -ms-flex-align: start !important;
    align-items: flex-start !important;
  }
  .align-items-sm-end {
    -ms-flex-align: end !important;
    align-items: flex-end !important;
  }
  .align-items-sm-center {
    -ms-flex-align: center !important;
    align-items: center !important;
  }
  .align-items-sm-baseline {
    -ms-flex-align: baseline !important;
    align-items: baseline !important;
  }
  .align-items-sm-stretch {
    -ms-flex-align: stretch !important;
    align-items: stretch !important;
  }
  .align-content-sm-start {
    -ms-flex-line-pack: start !important;
    align-content: flex-start !important;
  }
  .align-content-sm-end {
    -ms-flex-line-pack: end !important;
    align-content: flex-end !important;
  }
  .align-content-sm-center {
    -ms-flex-line-pack: center !important;
    align-content: center !important;
  }
  .align-content-sm-between {
    -ms-flex-line-pack: justify !important;
    align-content: space-between !important;
  }
  .align-content-sm-around {
    -ms-flex-line-pack: distribute !important;
    align-content: space-around !important;
  }
  .align-content-sm-stretch {
    -ms-flex-line-pack: stretch !important;
    align-content: stretch !important;
  }
  .align-self-sm-auto {
    -ms-flex-item-align: auto !important;
    align-self: auto !important;
  }
  .align-self-sm-start {
    -ms-fle
bootstrap4.css
.m-auto {
  margin: auto !important;
}