div .tr {
	clear:both;
}

div .tr div {
	float:left;
	margin-left:2em;
	margin-bottom:1em;
}

div .tr .cell-width-6em{
	width:6em;
}

div .tr .cell-width-8em{
	width:8em;
}

div .tr .cell-width-12em{
	width:12em;
}

div .tr .cell-width-20em{
	width:20em;
}