@media (orientation: landscape) and (max-width: 700px) 
{
    .contentcolumn
    {
        width:50% !important;       
    }
}

@media (orientation: portrait) and (max-width: 700px) 
{
    .contentcolumn
    {
        width:100% !important;       
    }
}
@media (max-width: 700px) 
{
    .contentimg
    {
        width:100% !important;       
    }
}