@charset "utf-8";
/*レイアウト*/
/* -------------------- Reset -------------------- */
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td,img {
	padding-right: 0;
	padding-left: 0;
	margin-top: 0;
	margin-right: auto;
	margin-bottom: 0;
	margin-left: 0px;
}
/* -------------------- Reset -------------------- */

#content {
	text-align: left;
	width: 754px;
	
	
}
#header {<link rel="stylesheet" type="text/css" href="base_f.css">
	padding-top: 10px;
	margin-top:10px;
}

#side {
	width: 180px;
	margin-left: 10px;
	float: left;
	margin-top: 10px;
	
}
#main {
	margin-left: 200px;
	margin-right: 10px;
	padding-bottom: 40px;
	margin-top: 10px;
}
<link rel="stylesheet" type="text/css" href="layout_f.css">