@media only screen and (min-width: 768px) { .three-col-middle-1040 #main-sidebar-container { width: 75%; } .three-col-middle-1040 #main-sidebar-container #main { width: 60%; } .three-col-middle-1040 #main-sidebar-container #sidebar { width: 20%; } .three-col-middle-1040 #sidebar-alt { width: 20%; } }