将您的 html 作为 #one,#two,#three 放入 ul,li 订单列表(我更新了您的 html,css 代码)
HTML
<div id="footer">
<div class="divwrapper">
<ul>
<li id="one">
<div class="footerinfo1">
<h1>Contact</h1>
<p>Company Name
<br>720 Fifth Avenue
<br>New York NY,10019
<br>USA</p>
</div>
</li>
<li id="two">
<div class="footerinfo3">
<h1>Contact</h1>
<p>Company Name
<br>720 Fifth Avenue
<br>New York NY,10019
<br>USA</p>
</div>
</li>
<li id="three">
<div class="dark">
<form id="submitemail">
<h1>Subscribe</h1>
<div class="dark"> <span><input type="text" class="check" placeholder="Please enter your email....">
<input id="submit" type="submit" value="Submit"></span>
</div </form>
</div>
</div>
</div>
</li>
</ul>
</div>
</div>
CSS
#one, #two, #three {
display:block;
float:left;
width:33%;
}
JS 演示
http://jsfiddle.net/U3RXD/3/