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

.card {
    border-radius: 10px;
    border: none;
    box-shadow: 0 5px 40px -5px rgba(#000, 0.25);
    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-body {
    padding: 30px;
}

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

.card-chain-blocks {
    height: auto;

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