div標簽在頁面上沒有顯示出來

HTML：

        <div class="general">
            <div class="visitList">
                <div class="namelist"><h3>兒童齒科</h3>                    
                    <div class="list01"><a target="_blank" href="ys.html">醫(yī)生</a><a target="_blank" href="Doctor-113.html">馮可青</a><a target="_blank" href="Doctor-119.html">張曉菊</a><a target="_blank" href="Doctor-716.html">劉紅梅</a><a target="_blank" href="Doctor-126.html">潘金兵</a><a target="_blank" href="Doctor-122.html">丁娟娟</a></div>                    
                    <div class="list01"><a target="_blank" href="ys.html">醫(yī)生</a><a target="_blank" href="Doctor-137.html">李玉光</a><a target="_blank" href="Doctor-115.html">唐學義</a><a target="_blank" href="Doctor-716.html">劉紅梅</a><a target="_blank" href="Doctor-126.html">潘金兵</a><a target="_blank" href="Doctor-122.html">丁娟娟</a></div>                    
                    <div class="list01"><a target="_blank" href="Doctor-134.html">吳紀珍</a><a target="_blank" href="Doctor-141.html">趙麗敏</a><a target="_blank" href="Doctor-130.html">張羅獻</a><a target="_blank" href="Doctor-117.html">錢皓瑜</a><a target="_blank" href="Doctor-118.html">李英</a><a target="_blank" href="Doctor-116.html">鄭素歌</a></div>                  
                    <div class="list01"><a target="_blank" href="Doctor-130.html">張羅獻</a><a target="_blank" href="Doctor-117.html">錢皓瑜</a><a target="_blank" href="Doctor-143.html">齊詠</a><a target="_blank" href="Doctor-118.html">李英</a><a target="_blank" href="Doctor-116.html">鄭素歌</a><a target="_blank" href="Doctor-126.html">潘金兵</a></div>            
                    <div class="list01"></div>             
                    <div class="list01"></div>
                    <div class="list01"></div>
                    <div class="list01"></div>
                    <div class="list01"><a target="_blank" href="Doctor-141.html">趙麗敏</a><a target="_blank" href="Doctor-130.html">張羅獻</a><a target="_blank" href="Doctor-137.html">李玉光</a><a target="_blank" href="Doctor-140.html">陳獻亮</a><a target="_blank" href="Doctor-117.html">錢皓瑜</a><a target="_blank" href="Doctor-119.html">張曉菊</a><a target="_blank" href="Doctor-115.html">唐學義</a><a target="_blank" href="Doctor-1114.html">李曉亮</a></div>                
                    <div class="list01"><a target="_blank" href="Doctor-141.html">趙麗敏</a><a target="_blank" href="Doctor-130.html">張羅獻</a><a target="_blank" href="Doctor-137.html">李玉光</a><a target="_blank" href="Doctor-140.html">陳獻亮</a><a target="_blank" href="Doctor-112.html">時軍</a><a target="_blank" href="Doctor-119.html">張曉菊</a><a target="_blank" href="Doctor-115.html">唐學義</a><a target="_blank" href="Doctor-1114.html">李曉亮</a></div>                   
                    <div class="list01"><a target="_blank" href="Doctor-714.html">馬厚志</a><a target="_blank" href="Doctor-111.html">陳卓昌</a><a target="_blank" href="Doctor-113.html">馮可青</a><a target="_blank" href="Doctor-143.html">齊詠</a><a target="_blank" href="Doctor-138.html">馬蕓</a><a target="_blank" href="Doctor-717.html">張曉宇</a><a target="_blank" href="Doctor-121.html">程東軍</a></div>                 
                    <div class="list01"><a target="_blank" href="Doctor-714.html">馬厚志</a><a target="_blank" href="Doctor-111.html">陳卓昌</a><a target="_blank" href="Doctor-113.html">馮可青</a><a target="_blank" href="Doctor-143.html">齊詠</a><a target="_blank" href="Doctor-138.html">馬蕓</a><a target="_blank" href="Doctor-717.html">張曉宇</a><a target="_blank" href="Doctor-121.html">程東軍</a></div>              
                    <div class="list01"><a target="_blank" href="Doctor-134.html">吳紀珍</a><a target="_blank" href="Doctor-111.html">陳卓昌</a><a target="_blank" href="Doctor-131.html">王凱</a><a target="_blank" href="Doctor-112.html">時軍</a><a target="_blank" href="Doctor-893.html">況紅艷</a><a target="_blank" href="Doctor-1128.html">汪錚</a></div>                
                    <div class="list01"><a target="_blank" href="Doctor-134.html">吳紀珍</a><a target="_blank" href="Doctor-131.html">王凱</a><a target="_blank" href="Doctor-112.html">時軍</a><a target="_blank" href="Doctor-118.html">李英</a><a target="_blank" href="Doctor-1128.html">汪錚</a><a target="_blank" href="Doctor-893.html">況紅艷</a></div>
                    <div class="clear"></div>
                </div>
            </div>
        </div>

CSS:

            *{padding: 0;margin: 0;}
            .general .visitList{ width:936px;margin-bottom:5px; padding:0; font-size:14px; color:#666; text-align:center; line-height:43px;}

            .general .visitList .namelist h3{  line-height: 43px; text-align:left; padding-left:36px; line-height:42px; border:1px #e9e9e9 solid;}
            .general .visitList .namelist .list01{ width:64px; height:auto; margin-right:1px;float:left;border-left:1px #e9e9e9 solid;border-right:1px #e9e9e9 solid;}
            .general .visitList .namelist .list01 a{ width:100%; height:43px; display:block; color:#666;border-bottom: 1px #e9e9e9 solid;}
            .general .visitList .namelist .list01 a:hover{ background:#0082D6; color:#fff;}

不知道為什么中間四列不會顯示出來，求指教，謝謝。