.content{width: 1000px;}
.content p,.content h4{line-height: 24px;color: #ffffff;}
.content h4{font-weight: bold;}
.img1{width: 1000px;height: 34px;}
.img2{width: 230px;height: 173px;}
.bg1{background:  url(bj.jpg);}
.middle{margin: 0 auto;}
.left{float: left;}
.mt10{margin-top: 10px;}
.mt20{margin-top: 20px;}
.mt30{margin-top: 30px;}
.m10{margin: 10px;}
.ml10{margin-left: 10px;}
.ml80{margin-left: 80px;}
.ti2{text-indent: 2em;}
.w750{width: 750px;}
.w560{width: 560px;}