title: How to add space between buttons in selectOneButton
body: <p>i am using the selectOneButton and i want to add space between buttons, and if possible change the selection background color, please advise how to do that, thanks.</p>
  
  <p>here's the code:</p>
  
  <pre><code>    &lt;p:selectOneButton value="#{buttonBean.number}"&gt;  
          &lt;f:selectItem itemLabel="Option 1" itemValue="1" /&gt;  
          &lt;f:selectItem itemLabel="Option 2" itemValue="2" /&gt;  
          &lt;f:selectItem itemLabel="Option 3" itemValue="3" /&gt;  
      &lt;/p:selectOneButton&gt;
  </code></pre>