styles.css

.pattern {
    width: 250px;
    height: 250px;
    border: 1px solid #000;

    background-image: paint(pattern);
    --pattern-color: #FFCC00;
    --pattern-size: 23;
    --pattern-spacing: 0;
    --pattern-shadow-blur: 10;
    --pattern-shadow-x: 10;
    --pattern-shadow-y: 1;
}