body {
    background-color: black;
    margin: 0;
    font-family: Roboto, sans-serif;
    width: 100vw;
    height: 100vh;
}

header {
    height: 80px;
    box-shadow: 0 0 20px 20px black;
    position: relative;
    z-index: 20;
    text-align: center;
    padding-top: 6px;
    background-color: black;
}

header a#back-home {
    height: 100%;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.500);
}

header #back-home img {
    height: 100%;
    filter: invert(100%);
}