.mesh-overlay {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAECAYAAACp8Z5+AAAAAXNSR0IArs4c6QAAAB9JREFUGFdjZEAF/xmR+P8ZGBgYYQJgDkgSRMA5IAEAgq4EBI6THD4AAAAASUVORK5CYII=)
        repeat;
}