blockscout/apps/block_scout_web/assets/css/components/_card.scss

$card-background-color: #fff !default;
$card-tab-active: $primary !default;
$card-default-border-radius: 10px !default;
$card-horizontal-padding: 30px;
$card-vertical-padding: 30px;

.card {
    background-color: $card-background-color;
    border-radius: $card-default-border-radius;
    border: none;
    box-shadow: 0 0 30px 0 rgba(202, 199, 226, 0.5);
    margin-bottom: 3rem;

    &-primary {
        background-color: $primary;
    }
}

.card-header {
    background-color: #fff;

    &-tabs {
        margin: (-$card-spacer-y) (-$card-spacer-x);
    }
}

.card-title {
    color: #333;
    font-size: 18px;
    font-weight: normal;
    line-height: 2.2rem;
    margin-bottom: 2rem;

    .card-title-container & {
        line-height: 1.2;
        margin: 0;

        @include media-breakpoint-down(sm) {
            margin-bottom: 25px;
        }
    }
}

.card-title-container {
    align-items: center;
    display: flex;
    justify-content: space-between;
    padding: 25px $card-horizontal-padding;

    @include media-breakpoint-down(sm) {
        flex-direction: column;
    }
}

.card-body {
    padding: $card-horizontal-padding;
}

.card-server-response-body {
    max-height: 400px;
    overflow-y: auto;
}

.card-chain-blocks {
    height: auto;

    @include media-breakpoint-down(md) {
        height: 595px;
    }
}

.card-tabs {
    align-items: center;
    border-top-left-radius: $card-default-border-radius;
    border-top-right-radius: $card-default-border-radius;
    border-bottom: 1px solid $base-border-color;
    display: flex;
    justify-content: flex-start;
    overflow: hidden;

    @include media-breakpoint-down(sm) {
        flex-direction: column;
    }
}

.card-tab {
    background-color: $card-background-color;
    color: #333;
    cursor: pointer;
    font-size: 14px;
    font-weight: normal;
    height: 70px;
    line-height: 70px;
    padding: 0 30px;
    text-align: center;

    &:hover {
        text-decoration: underline;
    }

    &.active {
        background-color: $card-tab-active;
        color: #fff;
        cursor: default;
        text-decoration: none;
    }

    @include media-breakpoint-down(sm) {
        width: 100%;
    }
}