title: Using Bootstrap CSS combined with Custom CSS - is this practice bad?
body: <p>If I place a button with standard Bootstrap CSS and than apply a custom css on top of it, is that bad practice?</p>
  
  <p>Should I scrap the Bootstrap altogether and use custom only? If so what is the cost in saving? I had another <strong>web developer</strong> advise me that these additional classes created overhead in compiling the web page. How can I measure the speed of what I personally think is insignificant?</p>
  
  <p>Here is an example of where a link looks like a button, using bootstrap css classes:</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-html lang-html prettyprint-override"><code>  &lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"&gt;
    &lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"&gt;&lt;/script&gt;
    &lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"&gt;&lt;/script&gt;
  
  &lt;style&gt;
        .custom-btn-css{
          font-size: 16px;
          font-weight: bold;
          border-radius: 30px;
          border-width: 0;
          margin-top: 15px;
          padding: 10px 32px;
          color: white;
      }
  &lt;/style&gt;
  
  &lt;div class="container"&gt;
    &lt;a  class="btn btn-primary btn-large custom-btn-css" href="#"&gt;Button Example&lt;/a&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>