.aboutus{width: 200px;height:75px;background: url(../images/aboutus.png);}
.products{width: 200px;height:75px;background: url(../images/products.png);}
.anli{width: 200px;height:75px;background: url(../images/project.png);}
.job{width: 200px;height:75px;background: url(../images/JOB.png);}
.contactus1{width: 200px;height:75px;background: url(../images/contactus.png);}
.jiance{width: 200px;height:75px;background: url(../images/jiance.png);}
#summarycontent{text-indent: 2em;color:#333;line-height: 2.5em; padding:10px; margin-left:35px;}
#sumtupian { width:765px; height:143px; margin:0 auto; margin-left:20px;}
#sumtupian div {float:left; margin-left:5px;}