vant/packages/vant-css/src/button.css

@import './common/var.css';
@import './loading.css';

@component-namespace van {
  @b button {
    position: relative;
    padding: 0;
    display: inline-block;
    height: 45px;
    line-height: 43px;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
    text-align: center;
    appearance: none;
    outline: 0;
    overflow: hidden;

    &::after {
      content: " ";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: #000;
      opacity: 0;
    }

    &:not(.is-disabled):active::after {
      opacity: .3;
    }

    @e icon-loading {
      display: inline-block;
      width: 16px;
      height: 16px;
      vertical-align: middle;
    }

    @m default {
      color: $button-default-color;
      background-color: $button-default-background-color;
      border: 1px solid $button-default-border-color;

      &:active {
        border-color: #cacaca;
        background-color: $c-gray-light;
        color: $c-gray-dark;
      }
    }

    @m primary {
      color: $button-primary-color;
      background-color: $button-primary-background-color;
      border: 1px solid $button-primary-border-color;

      &:active {
        border-color: #00AA00;
        background-color: #00AA00;
        color: #66CC66;
      }
    }

    @m danger {
      color: $button-danger-color;
      background-color: $button-danger-background-color;
      border: 1px solid $button-danger-border-color;

      &:active {
        border-color: #D43333;
        background-color: #D43333;
      }
    }

    @m large {
      width: 100%;
      height: 50px;
      line-height: 48px;
      font-size: 16px;
    }

    @m normal {
      padding: 0 15px;
      font-size: 14px;
    }

    @m small {
      min-width: 60px;
      height: 30px;
      line-height: 28px;
      font-size: 12px;
    }

    /*
      mini图标默认宽度50px，文字不能超过4个
     */
    @m mini {
      display: inline-block;
      width: 50px;
      height: 22px;
      line-height: 20px;
      font-size: 10px;

      & + .van-button--mini {
        margin-left: 5px;
      }
    }

    @m disabled {
      color: $button-disabled-color;
      background-color: $button-disabled-background-color;
      border: 1px solid $button-disabled-border-color;
    }

    @m block {
      display: block;
      width: 100%;
    }

    @m loading {
      .van-button__text {
        display: none;
      }
    }

    @m bottom-action {
      width: 100%;
      height: 50px;
      line-height: 50px;
      border: 0;
      border-radius: 0;
      background-color: $bottom-action-button-default-background-color;
      color: $bottom-action-button-default-color;
      font-size: 16px;

      &:active {
        border-color: #DD6F44;
        background-color: #DD6F44;
        color: #fff;
      }

      &.van-button--primary {
        background-color: $bottom-action-button-primary-background-color;
        color: $bottom-action-button-primary-color;

        &:active {
          border-color: #D43333;
          background-color: #D43333;
        }
      }
    }
  }
}