body {
    position:relative;
    font-family:monospace;
    height:100vh;
    margin:0;
    padding:0;
}

.blackPage {
    background-color: #000;
}

.redPage {
    background-color: #ff0000;
}

#container {
    width:100%;
    height:100%;
    display:flex;
    align-items: center;
    justify-content: center;
}

#container a{
    display:flex;
    align-items: center;
    justify-content: center;
    width:100%;
    height:100%;
}

#container img {
    max-width:75%;
}
h1 {
    font-size:1rem;
    text-transform: uppercase;
    margin:0;
    line-height:1;
    font-weight:400;
}