织梦列表页分页错位(分页显示为竖排)怎么办

<div class="dede_pages"> 
<ul class="pagelist"> 
{dede:pagelist listitem="info,index,end,pre,next,pageno,option" listsize="5"/} 
</ul> 
</DIV>

css样式代码

.dede_pages{ 
text-align:right; 
} 
.dede_pages ul{ 
float:right; 
padding:12px 0px 12px 16px; 
} 
.dede_pages ul li{ 
float:left; 
font-family:Tahoma; 
line-height:17px; 
margin-right:6px; 
border:1px solid #E9E9E9; 
} 
.dede_pages ul li a{ 
float:left; 
padding:2px 4px 2px; 
color:#555; 
display:block; 
} 
.dede_pages ul li a:hover{ 
color:#690; 
text-decoration:none; 
padding:2px 4px 2px; 
} 
.dede_pages ul li.thisclass, 
.dede_pages ul li.thisclass a,.pagebox ul li.thisclass a:hover{ 
background-color:#F8F8F8; 
padding:2px 4px 2px; 
font-weight:bold; 
} 
.dede_pages .pageinfo{ 
line-height:21px; 
padding:12px 10px 12px 16px; 
color:#999; 
} 
.dede_pages .pageinfo strong{ 
color:#555; 
font-weight:normal; 
margin:0px 2px; 
}