add empty div class

application/default/views/scripts/water/index.phtml

@@ -21,10 +21,9 @@ $this->breadcrumb()->setSeparator(' > ');
 <li><button type="button" onclick="show('keyword');return false;">关键词导航</button></li>
 <li><button class="float" type="button" onclick="location.href='/water/timeline'">时间轴导航</button></li>
 <li><button class="float" type="button" onclick="location.href='/water/timemap'">时空联合导航</button></li>
-</form>
-</ul>
+</form></ul>
 </div>
-<div>&nbsp;</div>
+<div class="clear">&nbsp;</div>
 <div id="intro">
 <img class="float" width="400" src="/images/water/water.jpg" />
 <p>