/*以下为banner图*/
.bg{ max-width: 1920px; background: url("../images/ab.png") no-repeat center; height: 200px;}

/*以下为公司简介*/
.about{ max-width: 1200px; margin: 30px auto; margin-bottom: 50px;}
.about h1{ background: url("../images/bt.png") no-repeat center; height: 48px;}
.about_bt{}
.about_bt h3{ color: #676767; font-size: 24px;}
.about_bt p{ color:#676767 ; font-size: 16px; background: url("../images/p.png") no-repeat left bottom;    height: 27px;}
.about_con{ margin-top: 20px;}
.about_con p{ width: 647px;line-height: 27px; color: #595857;}