:root {
 
    --bg-main-menu-img-1: url(images/main-menu-img-decor-1.png);
    --bg-main-menu-img-2: url(images/main-menu-img-decor-2.png);
    --bg-main-menu-img-3: url(images/main-menu-img-decor-3.png);
}



/*

var(--bg-main-menu-img-1);

*/

.menu-main-btn-img.btn-1 {
    background-image: var(--bg-main-menu-img-1);
}

.menu-main-btn-img.btn-2 {
    background-image: var(--bg-main-menu-img-2);
}

.menu-main-btn-img.btn-3 {
    background-image: var(--bg-main-menu-img-3);
}