#avatar-img {
    position: absolute;
    display: block;
    width: 100vw;
    height: 100vh;
    top: 0;
    left: 0;
    z-index: 0;
    /* https://stackoverflow.com/questions/27934548 */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-image: url("../img/me.jpg"), url("../img/me-low.jpg");
}

#links {
    margin-top: 2em;
}

#links>a {
    display: inline-block;
    margin-left: 0.5em;
    margin-right: 0.5em;
}

#links>a>p {
    margin-top: 0;
}

#links>a>img {
    filter: invert(100%);
}