好的，我正在制作一个工作网站原型，但在使用缩略图作为 Twitter Bootstrap 的一部分时遇到了一个小障碍
我的问题很容易看出，并且适用于我测试过的每个浏览器but Chrome 20.0.1132.57 (Official Build 145807) m在 Windows XP SP3 上。
If you goto the page you will likely see something like this:
however When I check this on Windows + Chrome the thumbnails all line up properly (no whitespace on the second row on the left.) see below
这是我使用的标记（我现在已经检查了三次并且看不到错误..所以我将全部发布以防万一它格式错误？）：
<ul class="thumbnails">
<li class="span3" id="c4">
<div class="thumbnail vcard">
<h4>AG Dryer Services, Inc.</h4>
<p>
<address>
234 N. Tyler street<br>
P. O. Box 450<br>
Elm Creek NE 68836, USA<br>
<br>
Phone: 1-308-856-4636<br>
Fax: 1-308-856-4641 </address>
</p>
<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
</div>
</li>
<li class="span3" id="c5">
<div class="thumbnail vcard">
<h4>Advanced Grain Handling</h4>
<p>
<address>
823 Main St West<br>
Mayville ND 58257, USA<br>
<br>
Phone: 1-701-788-8927</address>
</p>
<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
</div>
</li>
<li class="span3" id="c6">
<div class="thumbnail vcard">
<h4>Whitcomb Brothers Crane Service</h4>
<p>
<address>
16710 90th Ave<br>
Atwater MN 56209, USA<br>
<br>
Phone: 1-320-974-8337<br>
Fax: 1-320-974-8837</address>
</p>
<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
</div>
</li>
<li class="span3" id="c8">
<div class="thumbnail vcard">
<h4>Sims Construction Co.</h4>
<p>
<address>
1860 St Rt 56 SW<br>
London OH 43140, USA<br>
<br>
Phone: 1-740-852-4137<br>
Fax: 1-740-852-4729</address>
</p>
<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
</div>
</li>
<li class="span3" id="c10">
<div class="thumbnail vcard">
<h4>Elevator Services & Storage, Inc.</h4>
<p>
<address>
312 W Main St.<br>
Beaverdam, OH 45808, USA<br>
<br>
Phone: 1-419-643-5111<br>
Fax: 1-419-643-4762</address>
</p>
<a href="http://www.essicompanies.com" class="btn btn-primary" target="_blank">Website</a><a href="mailto:[email protected] /cdn-cgi/l/email-protection" class="btn btn-success">Email</a>
</div>
</li>
<li class="span3" id="c12">
<div class="thumbnail vcard">
<h4>General Steel Crane & Rigging</h4>
<p>
<address>
P.O. Box 1078<br>
Hopkinsville KY 42241<br>
<br>
Phone: 1-270-886-8857<br>
Fax: 1-419-643-4762</address>
</p>
<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
</div>
</li>
<li class="span3" id="c7">
<div class="thumbnail vcard">
<h4>Northern Grain Design & Const.</h4>
<p>
<address>
8015 highway 7, SE<br>
Clara City MN 56222, USA<br>
<br>
Phone: 1-320-367-2881<br>
Fax: 1-320-367-2879</address>
</p>
<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
</div>
</li>
<li class="span3" id="c9">
<div class="thumbnail vcard">
<h4>Miller Agri. Sales</h4>
<p>
<address>
103 Sycamore<br>
Friend NE 68359, USA<br>
<br>
Phone: 1-402-947-9881<br>
Fax: 1-402-947-9801</address>
</p>
<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
</div>
</li>
<li class="span3" id="c11">
<div class="thumbnail vcard">
<h4>Innovative Electrical Solutions. LLC.</h4>
<p>
<address>
11 W. Wilson<br>
P.O. Box 202<br>
Henning IL 61832, USA<br>
<br>
Phone: 1-217-286-3280</address>
</p>
<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
</div>
</li>
</ul>
我对 bootstrap css 文件做了一些非常小的更改（链接颜色和选项卡/背景颜色的内容），但与缩略图或网格系统无关。
请提供任何帮助，我将不胜感激，我真的在这里摸不着头脑。
给他们高度可以解决这个问题：
.thumbnails > li {
float: left;
margin-bottom: 18px;
margin-left: 20px;
height: 200px;
}