Acme.BookStore.HttpApi.Host/node_modules/bootstrap/scss/forms/_form-check.scss

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//
// Check/radio
//

.form-check {
  display: block;
  min-height: $form-check-min-height;
  padding-left: $form-check-padding-start;
  margin-bottom: $form-check-margin-bottom;

  .form-check-input {
    float: left;
    margin-left: $form-check-padding-start * -1;
  }
}

.form-check-input {
  width: $form-check-input-width;
  height: $form-check-input-width;
  margin-top: ($line-height-base - $form-check-input-width) * .5; // line-height minus check height
  vertical-align: top;
  background-color: $form-check-input-bg;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  border: $form-check-input-border;
  appearance: none;
  color-adjust: exact; // Keep themed appearance for print
  @include transition($form-check-transition);

  &[type="checkbox"] {
    @include border-radius($form-check-input-border-radius);
  }

  &[type="radio"] {
    // stylelint-disable-next-line property-disallowed-list
    border-radius: $form-check-radio-border-radius;
  }

  &:active {
    filter: $form-check-input-active-filter;
  }

  &:focus {
    border-color: $form-check-input-focus-border;
    outline: 0;
    box-shadow: $form-check-input-focus-box-shadow;
  }

  &:checked {
    background-color: $form-check-input-checked-bg-color;
    border-color: $form-check-input-checked-border-color;

    &[type="checkbox"] {
      @if $enable-gradients {
        background-image: escape-svg($form-check-input-checked-bg-image), var(--#{$variable-prefix}gradient);
      } @else {
        background-image: escape-svg($form-check-input-checked-bg-image);
      }
    }