.slot.position1x1.size6x3 {width:970px; height:475px; left:0px; top:0px;}
.slot.position4x1.size6x3 {width:970px; height:475px; left:0px; top:495px;}
.slot.position7x1.size6x3 {width:970px; height:475px; left:0px; top:990px;}
.grid {position:relative; width:970px; height:1485px;}
@media (min-width:660px) and (max-width:989px) 
{
 .slot.position1x1.size6x3 {width:640px; height:475px; left:0px; top:0px;}
.slot.position4x1.size6x3 {width:640px; height:475px; left:0px; top:495px;}
.slot.position7x1.size6x3 {width:640px; height:475px; left:0px; top:990px;}
.grid {position:relative; width:640px; height:1485px;} 
}
@media (max-width:659px) 
{
 .slot.position1x1.size6x3 {width:310px; height:145px; left:0px; top:0px;}
.slot.position4x1.size6x3 {width:310px; height:145px; left:0px; top:165px;}
.slot.position7x1.size6x3 {width:310px; height:145px; left:0px; top:330px;}
.grid {position:relative; width:310px; height:495px;} 
}