title: How to add element to existing css class
body: <p>How to add css element to my existing css class?</p>
  
  <p>CSS:</p>
  
  <pre><code>.usrgrid {
      color:blue;
      background-color:white;
  }
  </code></pre>
  
  <p>Is there any way to add attribute to <code>.usergrid</code>?</p>
  
  <p>I had try like <code>$(.usergrid).css("display","block");</code> but it's not working.</p>
  
  <p>Thanks.</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-js lang-js prettyprint-override"><code> $(".usergrid .k-button").css({ "display": "block" });</code></pre>
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.usergrid .k-button{
    color:black;
    background-color:white;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
     &lt;link rel="stylesheet" href="//kendo.cdn.telerik.com/2016.3.914/styles/kendo.common-bootstrap.min.css" /&gt;
      &lt;link rel="stylesheet" href="//kendo.cdn.telerik.com/2016.3.914/styles/kendo.bootstrap.min.css" /&gt;
    &lt;link rel="stylesheet" href="//kendo.cdn.telerik.com/2016.3.914/styles/kendo.bootstrap.mobile.min.css" /&gt;
       &lt;script src="http://code.jquery.com/jquery-1.9.1.min.js"&gt;&lt;/script&gt;
      &lt;script src="http://kendo.cdn.telerik.com/2016.3.914/js/kendo.all.min.js"&gt;&lt;/script&gt;
  
      &lt;script src="http://code.jquery.com/jquery-1.9.1.min.js"&gt;&lt;/script&gt;
      &lt;script src="http://kendo.cdn.telerik.com/2016.2.607/js/kendo.all.min.js"&gt;&lt;/script&gt;
  
    &lt;meta charset="utf-8"&gt;
    &lt;meta name="viewport" content="width=device-width"&gt;
    &lt;title&gt;JS Bin&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  
  &lt;/body&gt;
  &lt;/html&gt;</code></pre>
  </div>
  </div>
  </p>