.archive-description h1::after {
    background: #fffa68;
    display: block;
    content: " ";
    width: 100%;
    height: 20px;
    position: relative;
    top: -20px;
    left: 12px;
    z-index: -1;
    -webkit-transition: all .5s ease-in-out;
    -moz-transition: all .5s ease-in-out;
    -ms-transition: all .5s ease-in-out;
    -o-transition: all .5s ease-in-out;
    transition: all .5s ease-in-out;
}