Responsive grid test

Grid.css

*, *:before, *:after {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}

.row:after {
	content: "";
	display: table;
	clear: both;
}

.col {
	display: inline-block;
	float: left;
	position: relative;	
	min-height: 10px;
	margin-left: 2%;
}

.col:first-child {
	margin-left: 0;
}

.span-1 { width: 6.5%; }
.span-2 { width: 15%; }
.span-3 { width: 23.5%; }
.span-4 { width: 32%; }
.span-5 { width: 40.5%; }
.span-6 { width: 49%; }
.span-7 { width: 57.5%; }
.span-8 { width: 66%; }
.span-9 { width: 74.5%; }
.span-10 { width: 83%; }
.span-11 { width: 91.5%; }
.span-12 { width: 100%; }

.offset-1 { margin-left: 10.5% !important; }
.offset-2 { margin-left: 19% !important; }
.offset-3 { margin-left: 27.5% !important; }
.offset-4 { margin-left: 36% !important; }
.offset-5 { margin-left: 44.5% !important; }
.offset-6 { margin-left: 53% !important; }
.offset-7 { margin-left: 61.5% !important; }
.offset-8 { margin-left: 70% !important; }
.offset-9 { margin-left: 78.5% !important; }
.offset-10 { margin-left: 87% !important; }
.offset-11 { margin-left: 93.5% !important; }

.offset-1:first-child { margin-left: 8.5% !important; }
.offset-2:first-child { margin-left: 17% !important; }
.offset-3:first-child { margin-left: 25.5% !important; }
.offset-4:first-child { margin-left: 34% !important; }
.offset-5:first-child { margin-left: 42.5% !important; }
.offset-6:first-child { margin-left: 51% !important; }
.offset-7:first-child { margin-left: 59.5% !important; }
.offset-8:first-child { margin-left: 68% !important; }
.offset-9:first-child { margin-left: 76.5% !important; }
.offset-10:first-child { margin-left: 85% !important; }


@media screen and (max-width: 720px) {
	.row > .col {
		width: 100%;
		margin-left: 0;
	}
}