body {
    background-size: cover;
    height: 100%;
    overflow: hidden;
    font-family: 'Nimbus Sans', 'Helvetica', sans-serif;
}

div {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

h1 {
    font-size: 6vh;
    padding: 0.5em;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    font-weight: normal;
}

a {
    display: block;
    font-size: 10vh;
    padding: 5vh;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    text-decoration: none;
    text-align: center;
}