/*首页-公司简介*/
.about_bg{
	padding-bottom: 50px;
	background-image: url(../images/about_bg.jpg);
	background-repeat: repeat;
	background-position: center top;
	width: 100%;
	clear: both;
}
.about_head{
    margin-bottom: 40px;
    margin-top: 50px;
}
.about_head h2{
    text-align: center; 
    margin-top: 30px; 
    font-size:32px;
    color: #333;
    font-weight: bold;
}
.about_head p{
	text-align: center;
	color: #999999;
	margin-top: 15px;
}
.about_h3{
	color: #054383;
	font-size: 34px;
	font-weight: bold;
	margin: 0px;
	margin-top: 40px;
	margin-bottom: 10px;
}
.about_p{
	font-size: 16px;
	color: #333;
	padding-bottom: 20px;
	border-bottom: 1px solid #dadada;
}
.about_topmargin{ margin-top:60px;}
.about_content{line-height: 32px; margin-top:20px; color: #777; text-align:left; margin-bottom:20px;}
.about_img{margin: 9px 0px 0px 30px; max-width: 550px; float: right;}
.about_btn{
	display: block;
	text-align: center;
	width: 140px;
	padding: 7px 0px;
	color: #fff;
	text-decoration: none;
	border-radius: 15px;
	background-color: #054383;
	margin-top: 20px;
}
.about_btn:hover,.about_btn:focus{
    color: #fff;
    text-decoration: none;
    background-color: #3f3f3f;	border-radius: 15px;
}


.about_video{
    width: 100%;
}
.about_video img{ max-width:100%;}

/*小屏幕*/
@media screen and (max-width: 768px) {
.about_img {padding: 0px 5px; background-image:none;text-align: center; width:100%;}
.about_topmargin{ margin-top:20px;}

    .about_head{
        margin-bottom: 25px;
    }
    .about_head h2{
        margin-top: 35px; 
        font-size: 26px; 
    }
    .about_head p{
        font-size: 14px; 
        margin-top:8px;
    }
    .about_h3{
        font-size: 26px;
    }
    .about_content{
        margin-top:0px;
    }
    .about_btn{
        display: block;
        width: 200px;
        margin: 0 auto;
        margin-top: 20px;
        margin-bottom: 40px;
    }

}