get-boostrap-custom-checkbox

custom-checkbox-twbs.scss

$custom-checkbox-color: $color-brand-wcag-3-1;
$custom-checkbox-size: 24px;

.custom-checkbox {
  .custom-control-input {
    opacity: 0;
    width: $custom-checkbox-size;
    height: $custom-checkbox-size;
  }

  .custom-control-label {
    position: relative;
    margin-bottom: 0;
    vertical-align: top;
    padding-left: 0.5rem;
  }

  .custom-control-label::before {
    content: '';
    position: absolute !important;
    top: 0rem;
    left: -$custom-checkbox-size;
    display: block;
    width: $custom-checkbox-size;
    height: $custom-checkbox-size;
    pointer-events: none;
    border: #909090 solid 1px !important;
    border-radius: 4px;
    box-sizing: border-box;
  }

  // stick
  .custom-control-label::after {
    content: '';
    position: absolute;
    top: 0;
    left: -$custom-checkbox-size;
    display: block;
    width: $custom-checkbox-size;
    height: $custom-checkbox-size;
    background-size: 40%;
    background-position: center;
    background-repeat: no-repeat;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath fill='%23fff' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26l2.974 2.99L8 2.193z'/%3e%3c/svg%3e");
    box-sizing: border-box;
  }

  .custom-control-input:focus ~ .custom-control-label::before {
    border-color: #909090 !important;
    box-shadow: 0 0 0 0.2rem rgba(1, 160, 160, 0.25) !important;
  }

  .custom-control-input:checked ~ .custom-control-label::before {
    border-color: $custom-checkbox-color !important;
    background-color: $custom-checkbox-color !important;
  }

  .custom-control-input:focus:not(:checked) ~ .custom-control-label::before {
    border-color: #909090 !important;
  }

  .custom-control-input:not(:disabled):active ~ .custom-control-label::before {
    background-color: #c3ecec !important;
    border-color: #c3ecec !important;
  }
}