ant-design/components/button/style/index.less

@import '../../style/themes/default';
@import '../../style/mixins/index';
@import './mixin';

@btn-prefix-cls: ~'@{ant-prefix}-btn';

// for compatible
@btn-ghost-color: @text-color;
@btn-ghost-bg: transparent;
@btn-ghost-border: @border-color-base;

// Button styles
// -----------------------------
.@{btn-prefix-cls} {
  // Fixing https://github.com/ant-design/ant-design/issues/12978
  // It is a render problem of chrome, which is only happened in the codesandbox demo
  // 0.001px solution works and I don't why
  line-height: @line-height-base - 0.001;
  .btn;
  .btn-default;

  // Make sure that the target of Button's click event always be `button`
  // Ref: https://github.com/ant-design/ant-design/issues/7034
  > i,
  > span {
    pointer-events: none;
    display: inline-block;
  }

  &-primary {
    .btn-primary;

    .@{btn-prefix-cls}-group &:not(:first-child):not(:last-child) {
      border-right-color: @btn-group-border;
      border-left-color: @btn-group-border;

      &:disabled {
        border-color: @btn-default-border;
      }
    }

    .@{btn-prefix-cls}-group &:first-child {
      &:not(:last-child) {
        border-right-color: @btn-group-border;
        &[disabled] {
          border-right-color: @btn-default-border;
        }
      }
    }

    .@{btn-prefix-cls}-group &:last-child:not(:first-child),
    .@{btn-prefix-cls}-group & + & {
      border-left-color: @btn-group-border;
      &[disabled] {
        border-left-color: @btn-default-border;
      }
    }
  }

  &-ghost {
    .btn-ghost;
  }

  &-dashed {
    .btn-dashed;
  }

  &-danger {
    .btn-danger;
  }

  &-circle,
  &-circle-outline {
    .btn-circle(@btn-prefix-cls);
  }

  &:before {
    position: absolute;
    top: -1px;
    left: -1px;
    bottom: -1px;
    right: -1px;
    background: @component-background;
    opacity: 0.35;
    content: '';
    border-radius: inherit;
    z-index: 1;
    transition: opacity 0.2s;
    pointer-events: none;
    display: none;
  }

  .@{iconfont-css-prefix} {
    transition: margin-left 0.3s @ease-in-out;
  }

  &&-loading:before {
    display: block;
  }

  &&-loading:not(&-circle):not(&-circle-outline):not(&-icon-only) {
    padding-left: 29px;
    pointer-events: none;
    position: relative;
    .@{iconfont-css-prefix}:not(:last-child) {
      margin-left: -14px;
    }
  }

  &-sm&-loading:not(&-circle):not(&-circle-outline):not(&-icon-only) {
    padding-left: 24px;
    .@{iconfont-css-prefix} {
      margin-left: -17px;
    }
  }

  &-group {
    .btn-group(@btn-prefix-cls);
  }

  &:not(&-circle):not(&-circle-outline)&-icon-only {
    padding-left: 8px;
    padding-right: 8px;
  }

  // http://stackoverflow.com/a/21281554/3040605
  &:focus > span,
  &:active > span {
    position: relative;
  }

  // To ensure that a space will be placed between character and `Icon`.
  > .@{iconfont-css-prefix} + span,
  > span + .@{iconfont-css-prefix} {
    margin-left: 8px;
  }

  &-background-ghost {
    background: transparent !important;
    border-color: @component-background;
    color: @component-background;
  }

  &-background-ghost&-primary {
    .button-variant-ghost(@btn-primary-bg);
  }

  &-background-ghost&-danger {
    .button-variant-ghost(@btn-danger-color);
  }

  &-two-chinese-chars:first-letter {
    letter-spacing: 0.34em;
  }

  &-two-chinese-chars > *:not(.@{iconfont-css-prefix}) {
    letter-spacing: 0.34em;
    margin-right: -0.34em;
  }

  &-block {
    width: 100%;
  }

  .christmas&-primary:before {
    content: '';
    display: block;
    position: absolute;
    top: -6px;
    left: 0;
    right: 0;
    background: url(data:image/png;base64,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)
      no-repeat 50% 0;
    background-size: 64px;
    opacity: 1;
  }

  .christmas&-primary&-lg:before {
    background-size: 72px;
  }

  .christmas&-primary&-sm:before {
    background-size: 56px;
  }

  // https://github.com/ant-design/ant-design/issues/12681
  &:empty {
    vertical-align: top;
  }
}

a.@{btn-prefix-cls} {
  line-height: @btn-height-base - 2px;
  &-lg {
    line-height: @btn-height-lg - 2px;
  }
  &-sm {
    line-height: @btn-height-sm - 2px;
  }
}