.placaapi-modal {
  display:none; position:fixed; z-index:9999;
  top:0;left:0;width:100%;height:100%;
  background:rgba(0,0,0,0.5);
}
.placaapi-modal-content {
  background:#fff; margin:10% auto;
  padding:20px; width:80%; position:relative;
}
.placaapi-close {
  position:absolute; top:10px; right:15px;
  font-size:28px; cursor:pointer;
}