@charset "utf-8";
@media screen and (max-width: 640px){
	div#wrapper{
		overflow: hidden;
	}
	div#bgColor{
		position:relative;
		background: #F8F7F5;
	}

	div#logo{
		margin-left: 10px;
		max-width: 97%;
		height: auto;
		width :97%;
		
	}

	div#mainImgBox{
		display:none;
	}

	div#mainContents{
		width:97%;
		padding: 20px 10px 45px;
		margin: 0 auto;
		text-align: left;
		background: #fff;
	}

	div#mainContents strong{
		display: block;
		margin-bottom: 7px;
		font-weight: bold;
		font-size: 14px;
	}

	div#mainContents strong,
	div#mainContents dl{
		display: block;
	}

	div#conceptBox{
		width:97%;
		float: left;
	}

	div#topicsBox{
		float: left;
		margin-top: 45px;
		width:97%;
	}

	div#topicsBox dl{
		width:97%;
      	        height: 200px;
		overflow: hidden;
		border: none;
	}

	div#topicsBox dl dt,
	div#topicsBox dl dd{
		padding: 10px 0;
		border-bottom: 1px solid #ddd;
	}

	div#topicsBox dl dt{
		float:left;
		width:75px;
		background: url(../img/bg_boder.gif) repeat 0 0 ;
	}

	div#topicsBox dl dd{
		width:auto;
		margin-left:75px;
		padding-left: 20px;
	}
	
	div#outlineBox{
		display:none;
	}

}