title: Let span fill remaining width?
body: <p>I have the following li item:</p>
  
  <pre><code>&lt;li&gt;
    &lt;span style='float:left; background-color:red'&gt;a&lt;/span&gt;
    &lt;span style='float:left; background-color:green'&gt;b&lt;/span&gt;
  &lt;/li&gt;
  </code></pre>
  
  <p>I'd like the span on the right to fill whatever width is remaining in its parent li. Is there a way to do that?</p>
  
  <p>Thanks</p>