我是响应式网站的初学者，但对此有问题。在我的 Mac、iPad 和 iPhone 上，一切都很好，但显然导航栏在资源管理器 11（确切地说是 11.0.25）中的 Windows 机器上变为空白。我错过了什么？我尝试过研究，但无法找出问题所在，也无法复制它，因为对我来说一切看起来都很好。该网站位于 http://muconf.missouri.edu/boats2016/
（http://muconf.missouri.edu/boats2016/boatsproblem.png）我的联系人说，主页按钮显示在此屏幕截图中的唯一原因是她将鼠标悬停在上面，否则一切都是空白的。
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<div style="float:left; width:75%"><h2>Reporting Real Life, Telling True Stories</h2>
<p align="left" class="text">Join us once again in Columbia, Missouri, from March 2-4, 2016, as a dynamic group of filmmakers, journalists, and film critics engage in a series of thoughtful and energetic discussions about telling true stories in film and journalism. The fifth year of <em>Based on a True Story: The Intersection of Documentary Film and Journalism</em> will again set about analyzing the intersection of nonfiction storytelling forms, advocacy in that storytelling, and the cultural and ethical implications of the convergence between journalism and documentary film.</p>
<p class="text">An interdisciplinary group of scholars at the University of Missouri — sponsored by the Mizzou Advantage Program — will be partnering again with the True/False Film Fest to continue our tradition of light-hearted yet serious-minded discussions about documentary film. Conference attendees will spend time engaging with some of the top thinkers, purveyors, and practitioners of documentary film. It will be the perfect run-up to the 12th annual True/False Film Festival, March 3–6, 2016!</p></div>
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<a href="http://truefalse.org/"><h5 style="text-align:center">True/False Film Fest</h5>
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<td width="273" align="center" valign="middle"><p><img src="images/MU_Advantage_sm.jpg" width="130" height="75" alt="Mizzou Advantage" /></p>
<p><a href="http://www.missouri.edu/mizzou-advantage/">Mizzou Advantage</a></p></td>
<td colspan="2" align="center" valign="middle" ><p><img src="images/Murraylogo3.jpg" alt="T/F logo" width="86" height="86" border="0" /> </p>
<p>Jonathan B. Murray <br />
Center for Documentary Journalism</p></td>
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访问链接时背景变白似乎有问题
尝试完全摆脱a：visited选择器，这是不需要
的#nav a:link, a:visited {
...
}
自
#nav a {
...
}