#myModalAd{
 top:10%;
left:65%;
outline: none;

}
#myModalAd .modal-dialog  {width:75%; height:450px;}

@media screen and (min-width: 768px) {
	
	#myModalAd .modal-dialog  {width:400px;}

}
@media screen and (max-width: 768px) {
#myModalAd{
 top:1%;
left:5%;

outline: none;

}

}