.block-links > ul {
    padding: 0;
    list-style: none;
}

.block-links > ul > li > a {
    width: 100%;
    height: 100%;
    background: #0403;
}

.block-links > ul > li > a {
    position: absolute;
    display: block;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: linear-gradient(90deg, #0001 0%, #0000 50%);
    background-size: 300%;
    background-position: 100%;
    transition: 0.75s ease-out;
}

.block-links > ul > li > a:hover {
    text-decoration: none;
    background-position: 0%;
    transition: 0.25s ease-out;
}

.block-links > ul > li {
    position: relative;
    padding: 1em;
    margin: 0;
}