.dingyi{width:900px; height:410px; margin:0 auto;} 
.dingyi-tu{width:auto; height:auto; float:left; margin-top:34px; margin-left:20px;}
.dingyi-zi{width:460px; height:367px; float:right; margin-top:34px;}
.dingyi-zi img{display:block;}
.dingyi-zi p{display:block; font-size:14px; margin-top:24px; line-height:24px; text-indent:2em;}

.byx{width:900px; height:300px; clear:both; margin:0 auto; padding-top:30px;}
.byx-tu{width:auto; height:auto; float:left; margin-left:20px;}
.byx-zi{width:460px; height:290px; float:right;}
.byx-zi img{display:block;}
.byx-zi p{display:block; font-size:14px; margin-top:24px; line-height:24px;  text-indent:2em;}

.youshi{width:900px; height:280px; margin:0 auto; clear:both; padding-top:30px;}
.youshi-tu{width:390px; height:265px; float:left;}
.youshi-zi{width:460px; height:265px; float:right;}
.youshi-zi img{display:block; margin-top:20px;}
.youshi-zi p{display:block; font-size:14px; margin-top:20px; line-height:24px;  text-indent:2em;}

.zi{width:905px; height:auto; margin:0 auto; margin-top:30px;}
.zi p{font-size:14px; line-height:24px; text-indent:2em;}