[danik.js]

<style>
    #pixelgrid{
        background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAYAAABytg0kAAAAFklEQVQIW2N0dXX9zwAEjCDGrl27GAAsPQXNs43zfwAAAABJRU5ErkJggg==");
        pointer-events: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0
    }
</style>
<div id="pixelgrid">

</div>