div.requirements
{
	margin: 3em 12em 6em 12em; 
	text-align:left;
}

.requirements dt
{
	font-weight:bold;
	margin-top:0.6em;
	margin-bottom:0.4em;
}

div.per_row_2,
div.per_row_4
{	 
    margin: auto; 
    text-align:center; 
    width:90%;
}

div.per_row_2_left,
div.per_row_2_right
{	 
    width:46%; 
}

div.per_row_4_left,
div.per_row_4_right
{	 
    width:22%; 
}

div.per_row_2_left,
div.per_row_2_right,
div.per_row_4_left,
div.per_row_4_right
{	 
    border:#d5dde6 solid 1px;
	margin-left:1.0em;
	margin-right:1.0em;
}

div.per_row_2_left,
div.per_row_4_left
{	
    float:left; 
}

div.per_row_2_right,
div.per_row_4_right
{	
    float:right; 
}

div.per_row_2_left img,
div.per_row_2_right img,
div.per_row_4_left img,
div.per_row_4_right img
{	 
	margin-top:1.0em;
}