div.how { margin:0px 50px; }
table.main { background-color:#666666; border-collapse:separate;
		border:cccc99 1px solid; width:550px; }
th.main { background-color:#000000; border:#cccc99 1px solid; line-height:1.5; width:550px; }
td.main { font-size:x-small; background-color:#333333; border:#cccc99 1px solid;
	 line-height:1.5; width:550px; }
th.li { background-color:#000000; border:#cccc99 1px solid; line-height:1.5; width:150px; }
td.li { color:#666600; background-color:#cccccc; border:#cccc99 1px solid;
		width:400px; }