The map module doesn't have a background overlay option and sometimes you want a different height. Add this CSS to add an overlay and change the height.

/* -- START background overlay on map -- */
.et_pb_map div:first-child > div:first-child > div:first-child > div:before {
background-color: rgba(0,0,0,0.1);
content: "";
height: 100%;
left: 0;
position: absolute;
top: 0;
width: 100%;
z-index: 999;
}
.et_pb_map {height: 475px !important; margin-top: 35px; z-index:
99999;}/* -- END background overlay on map -- */
Code language: CSS (css)