Reply To: Side windows

Hello,

You need to upload the images which you want to use as the background.

Then add this code to the Theme Settings > Custom CSS > Global:

/*header*/
.cart-widget-side.woodmart-cart-opened .widget-heading{
    background-image: url(https://woodmartcdn-cec2.kxcdn.com/wp-content/uploads/2015/12/newsletter-new.jpg?id=9309)!important;
    background-position: 0 0!important;
    background-repeat: no-repeat!important;
}
/*body*/
.cart-widget-side.woodmart-cart-opened .widget_shopping_cart{
    background-image: url(https://woodmartcdn-cec2.kxcdn.com/wp-content/uploads/2015/12/newsletter-new.jpg?id=9309)!important;
    background-position: 0 0!important;
    background-repeat: no-repeat!important;
}
/*footer*/
.cart-widget-side.woodmart-cart-opened .shopping-cart-widget-footer{
    background-image: url(https://woodmartcdn-cec2.kxcdn.com/wp-content/uploads/2015/12/newsletter-new.jpg?id=9309)!important;
    background-position: 0 0!important;
    background-repeat: no-repeat!important;
}

Insert the images URL from your Media library instead of the current ones.

Best Regards