title: How to make a full width sub-menu
body: <p>I would like to make a full width drop down sub-menu. Please check my site. My site is <a href="http://www.samgyoyu.com" rel="nofollow">here</a>.</p>
  
  <p>I tried these code but it's not working. I put these code to child theme's style css.</p>
  
  <pre><code>#masthead .color-site-white nav .sub-menu {
  left: 0;
  right: 0; }
  
  #masthead .color-site-white nav .sub-menu {
  width:100% }
  </code></pre>
  
  <p>I don't know how to do it.. Please help me! Thanks.</p>