#pop {
   z-index:2;
   position:absolute; 
   left: 15%;
   top: 135px;
   width: 70%;
}
#pop img { width: 100%; height: auto}
#cerrar {
   float:right;
   margin-right:5px;
   cursor:pointer;
   height: 30px;
   width:31px;
   position:relative;
   top: 40px;
   right: 10px;
   z-index: 100
}
#cerrar:hover { color:#0ac3c8}