.iwm_map_canvas {
width:100%;
display: inline-block;
position: relative;
list-style: none;
}
.iwm_map_canvas:after {
padding-top: 61.7%; 
display: block;
content: '';
}
.iwm_map_canvas div[id*='map_canvas_']  {
position: absolute;
top: 0; 
bottom: 0; 
right: 0; 
left: 0; 
} #iwm_map_overlay .iwm_data { 
position:absolute; 
top:0; 
left:0; 
pointer-events:none; 
}
#iwm_map_overlay {
width:100%;
display: inline-block;
position: relative;
list-style: none;
}