body {
    background: #222;
    color:beige;
    font-family: Arial, Helvetica, sans-serif;
}

a {
    color: #f60;
    text-decoration: none;
}

a:hover {
    color: #fc9;
}

section.column-layout-preview {
    position: absolute;
    height: 100%;

    left: 50%;
    transform: translateX(-50%);
}

section.column-layout-preview .col-1 {
    background: #ff000011;
    height: 100%;
}