/* Fix for older Browsers. Replace the %-values with your own values.
This setting assumes:
Only side column left: #left: 20% – #main: 80%
Only side column right: #right: 20% – #main: 80%
Side columns left and right: #left/#right: 20% each – #main: 60%
*/

@media (min-width: 1024px) {

	.add-left #left {
    width:20%;
    left: -80%;
	}
	.add-left.add-right #left {
    width:20%;
    left: -60%;
	}
	.add-right #right {
    width:20%;
	}
	.add-left #main {
    width: 80%;
    left: 20%;
	}
	.add-right #main {
    width: 80%;
	}
	.add-left.add-right #main {
    width: 60%;
    left: 20%;
	}

}