Overleaf/services/web/frontend/stylesheets/components/card.less

.card {
  background-color: white;
  border-radius: @border-radius-base;
  box-shadow: none;
  padding: @line-height-computed;
  .page-header {
    margin: 0 0 1.5625rem;
    h1,
    h2,
    h3 {
      margin-top: 0;
    }
  }
  > .container-fluid {
    padding: 0;
  }

  .card-header {
    border-bottom: 1px solid @gray-lighter;
    padding-bottom: @line-height-computed;
    margin-bottom: @line-height-computed;
    h2 {
      margin: 0;
    }
  }

  > :first-child {
    margin-top: 0;
  }
  > :last-child {
    margin-bottom: 0;
  }

  &.card-drop-shadow {
    box-shadow: @card-box-shadow;
    background-color: white;

    > hr {
      margin-left: -@line-height-computed;
      margin-right: -@line-height-computed;
    }
  }
}

.card-thin {
  padding: @line-height-computed / 2;
}

.card-group {
  .card {
    margin: @line-height-computed -15px 0 -15px;
    border-radius: 0;

    &.card-highlighted {
      // Make it taller and card like
      margin-top: 0;
      border-radius: @border-radius-base;
    }

    &.card-first {
      border-top-left-radius: @border-radius-base;
      border-bottom-left-radius: @border-radius-base;
    }
    &.card-last {
      border-top-right-radius: @border-radius-base;
      border-bottom-right-radius: @border-radius-base;
    }
  }
}

.card-border {
  border: @border-width-base solid @border-color-base;
}

.card-content {
  padding: @padding-md;
}

.card-gray {
  &:extend(.card);
  background-color: @card-gray-bg-color;
  border-radius: @card-border-radius;
}

.card-gray-dark {
  &:extend(.card);
  background-color: @ol-blue-gray-1;
  border-radius: @card-border-radius;
}