.slot.position1x1.size6x2 {width:970px; height:310px; left:0px; top:0px;}
.slot.position3x1.size6x2 {width:970px; height:310px; left:0px; top:330px;}
.grid {position:relative; width:970px; height:660px;}
@media (min-width:660px) and (max-width:989px) 
{
 .slot.position1x1.size6x2 {width:640px; height:310px; left:0px; top:0px;}
.slot.position3x1.size6x2 {width:640px; height:310px; left:0px; top:330px;}
.grid {position:relative; width:640px; height:660px;} 
}
@media (max-width:659px) 
{
 .slot.position1x1.size6x2 {width:310px; height:145px; left:0px; top:0px;}
.slot.position3x1.size6x2 {width:310px; height:145px; left:0px; top:165px;}
.grid {position:relative; width:310px; height:330px;} 
}