#ad_189 .pt-item  a{
	background-position: left bottom;
	background-repeat: no-repeat;
	background-size: cover;   
}
@media(min-width: 769px){
    #ad_189 .pt-item  a{
        height:310px;
    }   
}
@media(max-width: 768px){
    #ad_189 .pt-item  a,#ad_189 .pt-item .item{
        height:15.5rem;
    }
}