MyJavawebProject/WebContent/scss/bootstrap/_buttons.scss

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// stylelint-disable selector-no-qualifying-type

//
// Base styles
//

.btn {
  display: inline-block;
  font-weight: $btn-font-weight;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: $btn-border-width solid transparent;
  @include button-size($btn-padding-y, $btn-padding-x, $font-size-base, $btn-line-height, $btn-border-radius);
  @include transition($btn-transition);

  // Share hover and focus styles
  @include hover-focus {
    text-decoration: none;
  }

  &:focus,
  &.focus {
    outline: 0;
    box-shadow: $btn-focus-box-shadow;
  }

  // Disabled comes first so active can properly restyle
  &.disabled,
  &:disabled {
    opacity: $btn-disabled-opacity;
    @include box-shadow(none);
  }

  // Opinionated: add "hand" cursor to non-disabled .btn elements
  &:not(:disabled):not(.disabled) {
    cursor: pointer;
  }

  &:not(:disabled):not(.disabled):active,
  &:not(:disabled):not(.disabled).active {
    background-image: none;
    @include box-shadow($btn-active-box-shadow);

    &:focus {
      @include box-shadow($btn-focus-box-shadow, $btn-active-box-shadow);
    }
  }
}

// Future-proof disabling of clicks on `<a>` elements
a.btn.disabled,
fieldset:disabled a.btn {
  pointer-events: none;
}


//
// Alternate buttons