How to add an overlay over Banner Slideshow

[tuanphan]

To add an overlay over Banner Slideshow in Squarespace, you can use this code to Custom CSS box.

div.user-items-list-banner-slideshow .slide-media-container:after {
    content: "";
    background-color: rgba(0,0,0,0.6);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}