.row {
	width:960px;
	margin:0 auto;
	position:relative;
}

.span1 {
	width:60px;
}
.span2 {
	width:140px;
}
.span3 {
	width:220px;
}
.span4 {
	width:300px;
}
.span5 {
	width:380px;
}
.span6 {
	width:460px;
}
.span7 {
	width:540px;
}
.span8 {
	width:620px;
}
.span9 {
	width:700px;
}
.span10 {
	width:780px;
}
.span11 {
	width:860px;
}
.span12 {
	width:940px;
}

.span1, .span2, .span3, .span4, .span5, .span6, .span7, .span8, .span9, .span10, .span11, .span12 {
	float:left;
	margin:0 10px;
}