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

@import "../../style/themes/default";
@import "../../style/mixins/index";

@card-prefix-cls: ~"@{ant-prefix}-card";
@card-padding-base: 24px;
@card-padding-wider: 32px;

.@{card-prefix-cls} {
  background: @component-background;
  border-radius: @border-radius-sm;
  font-size: @font-size-base;
  position: relative;
  transition: all .3s;

  &:not(&-no-hovering):hover {
    box-shadow: @box-shadow-base;
    border-color: @shadow-color;
  }

  &-bordered {
    border: @border-width-base @border-style-base @border-color-split;
  }

  &-head {
    height: @card-head-height;
    line-height: @card-head-height;
    background: @card-head-background;
    border-bottom: @border-width-base @border-style-base @border-color-split;
    padding: 0 @card-padding-base;
    border-radius: @border-radius-sm @border-radius-sm 0 0;
    .clearfix;
    margin-bottom: -1px; // Fix card grid overflow bug: https://gw.alipayobjects.com/zos/rmsportal/XonYxBikwpgbqIQBeuhk.png
    display: flex;

    &-title {
      font-size: @font-size-lg;
      text-overflow: ellipsis;
      max-width: 100%;
      overflow: hidden;
      white-space: nowrap;
      color: @card-head-color;
      font-weight: 500;
      display: inline-block;
      flex: 1;
    }
  }

  &-extra {
    float: right;
    text-align: right;
    // https://stackoverflow.com/a/22429853/3040605
    margin-left: auto;
  }

  &-body {
    padding: @card-padding-base;
    .clearfix;
  }

  &-contain-grid &-body {
    margin: -1px 0 0 -1px;
    padding: 0;
  }

  &-grid {
    border-radius: 0;
    border: 0;
    box-shadow: 1px 0 0 0 @border-color-split, 0 1px 0 0 @border-color-split, 1px 1px 0 0 @border-color-split, 1px 0 0 0 @border-color-split inset, 0 1px 0 0 @border-color-split inset;
    width: 33.33%;
    float: left;
    padding: @card-padding-base;
    transition: all .3s;
    &:hover {
      position: relative;
      z-index: 1;
      box-shadow: @box-shadow-base;
    }
  }

  &-wider-padding &-head {
    padding: 0 @card-padding-wider;
  }

  &-wider-padding &-body {
    padding: @card-padding-base @card-padding-wider;
  }

  &-wider-padding &-extra {
    right: @card-padding-wider;
  }

  &-padding-transition &-head,
  &-padding-transition &-body {
    transition: padding .3s;
  }

  &-padding-transition &-extra {
    transition: right .3s;
  }

  &-loading &-body {
    user-select: none;
    padding: 0;
  }

  &-loading-content {
    padding: @card-padding-base;
  }

  &-loading-block {
    display: inline-block;
    margin: 5px 1% 0;
    height: 14px;
    border-radius: @border-radius-sm;
    background: linear-gradient(90deg, rgba(207, 216, 220, .2), rgba(207, 216, 220, .4), rgba(207, 216, 220, .2));
    animation: card-loading 1.4s ease infinite;
    background-size: 600% 600%;
  }
}

@keyframes card-loading {
  0%,
  100% {
		background-position: 0 50%;
	}
	50% {
		background-position: 100% 50%;
	}
}