Archipelago/WebHostLib/static/styles/header/oceanHeader.css

html{
    background-image: url('../../static/backgrounds/oceans/oceans-0002.png');
    background-repeat: repeat;
    background-size: 250px 250px;
}

#base-header{
    background: url('../../static/backgrounds/header/ocean-header.png') repeat-x;
}