.conta {
    width: 100%;
    height: 100%;
      
    
}
.conta img {
    
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.yd_image{
    display:none;
    
}
@media only screen and (max-width: 768px) { 
    
    .conta {

        padding-top: 60px;
    }
    .yd_image{
    display:block;
    
}
    .pc_image{
    display:none;
    
}
}