badge-danger

bootstrap5.css

bootstrap5.css
.badge-danger {
  color: #fff;
  background-color: #dc3545;
}
bootstrap5.css
a.badge-danger:hover,
a.badge-danger:focus {
  color: #fff;
  background-color: #bd2130;
}
bootstrap5.css
a.badge-danger:focus,
a.badge-danger.focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.5);
}

html bootstrap5 Sample

バッジ基本的な使用例：badge

primary 1

secondary 11

success 111

danger 1111

warning 0

info 99

light 999

dark 9999

  <p>primary <span class="badge badge-primary">1</span></p>
  <p>secondary <span class="badge badge-secondary">11</span></p>
  <p>success <span class="badge badge-success">111</span></p>
  <p>danger <span class="badge badge-danger">1111</span></p>
  <p>warning <span class="badge badge-warning">0</span></p>
  <p>info <span class="badge badge-info">99</span></p>
  <p>light <span class="badge badge-light">999</span></p>
  <p>dark <span class="badge badge-dark">9999</span></p>

ピル型のバッジを作成する：badge-pill

Primary Secondary Success Danger Warning Info Light Dark 
  <span class="badge badge-pill badge-primary">Primary</span>
  <span class="badge badge-pill badge-secondary">Secondary</span>
  <span class="badge badge-pill badge-success">Success</span>
  <span class="badge badge-pill badge-danger">Danger</span>
  <span class="badge badge-pill badge-warning">Warning</span>
  <span class="badge badge-pill badge-info">Info</span>
  <span class="badge badge-pill badge-light">Light</span>
  <span class="badge badge-pill badge-dark">Dark</span>