<div class="waters"></div>

<style>
    .waters {
        --color-waters: #242424;

        position: fixed;
        z-index: -99;
        top: 0;
        left: 0;
        height: 100%;
        width: 100%;
        background-color: var(--color-waters);
        mask-image: url('/bremen-waters-white.svg');
        mask-position: center;
        background-position: center;
        background-attachment: fixed;
    }
</style>