title: HTML/CSS, integrating a slider template
body: <p>I want to integrate this slider into my web page:</p>
  
  <p>Template: codepen.io/suez/pen/ByvKXE</p>
  
  <p>(I have the permission), but it is using a css rules that contains "body" and "html" selectors which ruins my web page and contradicts with my own CSS stylesheet. these lines of code from the template:</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>*, *:before, *:after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html, body {
    font-size: 62.5%;
    height: 100%;
    overflow: hidden;
  }
  body {
    background: #000;
  }</code></pre>
  </div>
  </div>
  </p>
  
  <p>How can i do it without affecting my web page?</p>