title: Table class not working in css / html
body: <p>Trying to add a table into the footer of a webpage, and this specific table needs to be 100% wide, black background. Have coded the css and html as below, and doesn't seem to recognise it at all. Anyone know where I'm going wrong?</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>table.sign {
      width:100%; 
      background-color: rgba(0,0,0,0.6);
      align:center;
      border: none;
      padding: none;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;table class="sign"&gt;
    &lt;tr&gt;
      &lt;td&gt;
        &lt;b&gt;Content will go here.&lt;/b&gt;
      &lt;/td&gt;
    &lt;/tr&gt;
  &lt;/table&gt;</code></pre>
  </div>
  </div>
  </p>