.map-overlay{position:relative;display:inline-block;width:100%;height:300px;overflow:hidden}.map-overlay iframe{width:100%;height:100%;border:none;filter:grayscale(100%);transition:filter 0.3s ease-in-out}.map-overlay .overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(100,100,100,0.4);transition:opacity 0.3s ease-in-out;pointer-events:none}.map-overlay:hover .overlay{opacity:0}.map-overlay:hover iframe{filter:grayscale(0%)}