title: How to use CSS selector with space in class name
body: <p>I am trying to find CSS elements in a page, containing white space at the end of the class name: </p>
  
  <pre><code>@agent = Mechanize.new
  page = @agent.get(somepage)
  </code></pre>
  
  <p>Where the tag is:</p>
  
  <pre><code>&lt;div class="Example "&gt;
  </code></pre>
  
  <p>When trying:</p>
  
  <pre><code>page.search('.Example')
  </code></pre>
  
  <p>the element is not found and when trying:</p>
  
  <pre><code>page.search('.Example ') &lt;- space following the name
  </code></pre>
  
  <p>Nokogiri raises an exception:</p>
  
  <pre><code>Nokogiri::CSS::SyntaxError: unexpected '$' after 'DESCENDANT_SELECTOR' 
  </code></pre>