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

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

.van-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;
    border-radius: inherit; /* inherit parent's border radius */
  }

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

  &__icon-loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    vertical-align: middle;
  }

  &--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;
    }
  }

  &--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;
    }
  }

  &--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;
    }
  }

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

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

  &--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
  */
  &--mini {
    display: inline-block;
    width: 50px;
    height: 22px;
    line-height: 20px;
    font-size: 10px;

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

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

  &--block {
    display: block;
    width: 100%;
  }

  &--loading {
    .van-button__text {
      display: none;
    }
  }

  &--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;
      }
    }
  }
}