section{
    border-top: 2px solid;
}

section:nth-of-type(1), section:nth-of-type(1) .tags li {
    border: none;
}

section:nth-of-type(2), section:nth-of-type(2) .tags li {
    border-color: cornflowerblue;
}

section:nth-of-type(3), section:nth-of-type(3) .tags li {
    border-color: lightcoral;
}

section:nth-of-type(4), section:nth-of-type(4) .tags li {
    border-color: forestgreen;
}

section:nth-of-type(5), section:nth-of-type(5) .tags li {
    border-color: goldenrod;
}

section:nth-of-type(6), section:nth-of-type(6) .tags li {
    border-color: darkviolet;
}