papercss/src/tabs.scss

@import './colors.less';

.tabs {
    .content {
        display: none;
        padding: 0.75rem 0 0;
    }

    input {
        display: none;
    }

    label {
        display: inline-block;
        margin: 0 0 -1px;
        padding: 0.75rem 0.75rem;
        font-weight: 600;
        text-align: center;
        color: $primary-light;
    }

    label:hover {
        color: $muted;
        cursor: pointer;
    }

    input:checked+label {
        color: $primary;
        border-bottom: solid 3px $secondary;
    }

    @mixin loop($num) when ($num > 0)
{
        @include loop(($num - 1));
        input[id = #{"tab${num}"]:checked~div[id = ~"content${num}"}]{
            display:block;
        }
    }

    @include loop(5);
}