#nav div{ width:25%; float:left; background:#FFFFFF; padding:5px 0; text-align:center; padding:10px 0; font-size:18px; border-bottom:2px solid #ccc;}

.logo2{ text-align:center; margin:100px 0;}
.lianxi{ padding:0 0 0 20px;}
.lianxi p{ text-indent:2em; font-size:16px;}
.lianxi div{ font-size:18px; color:#000000;}