@shower/material/styles/shower/shower-grid.css

Material theme for Shower HTML presentation engine

/* Shower Grid */

.shower.full.grid::before {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
    content: '';
    pointer-events: none;
    background-image: url('grid.svg');
}