#main_topics{
	width: 600px;
	padding: 0;
	margin-top: 0;
	margin-left: 65px;
	margin-bottom: 0;
}

#main_topics h2{
	font-size: 130%;
	border-bottom: 2px solid #797979;
	padding-left: 10px;
	margin-bottom: 10px;
}

#main_topics h2 span{

}

#table_main{
	width: 600px;
	margin-right: auto;
	margin-left: auto;
}

#table_main p{
	padding-left: 15px;
}

#table_l{
	float: left;
	width: 300px;
}

#table_r{
	float: left;
	width: 300px;
}

#table_r img{
	margin-top: 10px;
	margin-bottom: 10px;
}

#table_bottom{
	text-align: center;
}

#table_bottom img{
	margin-top: 5px;
}

#end_lecture{
	color: #fe0000;
	font-size: 110%;
	width: 100%;
	border: 2px solid #f00;
	text-align: center;
	line-height: 3em;
	height: 3em;
	margin-bottom: 10px;
}

/*全体透過ロールオーバー*/
.opty a:hover img {  
	opacity:0.8;
	filter: alpha(opacity=80);
}

.clearfix:after {
	content:".";
	display:block;
	visibility:hidden;
	height:0.1px;
	font-size:0.1em;
	line-height:0;
	clear:both;
}
.clearfix {
	display:inline-block;
}
/* Hides from IE-mac \*/
* html .clearfix {
	height:1%;
}
.clearfix {
	display:block;
}
/* End hide from IE-mac */