.about_us {	float: left;	width: 100%;}.about_us_dabiaoti {	width: 100%;	float: left;	margin-top: 40px;	text-align: center;}.about_us_dabiaoti h1 {	padding-bottom: 20px;	font-size: 24px;}.about_us_dabiaoti p {	color: rgb(153, 153, 153);	font-size: 13px;}.about_content {	float: left;	margin:30px 0 80px;	width: 100%;}.about_content h2 {	margin-bottom: 30px;	text-align: center;	font-size: 21px;}.about_content p {	text-indent: 2em;	line-height: 23px;	color: #5a5a5a;}.about_content img{ max-width: 100%;}