I copied the code from a codepen sample but my styles not affected !

**[Codepen link](https://codepen.io/juslwk/pen/xgbDB)**:

I cannot find out what is the problem!
my code:

```js
(function() {

  var button = document.getElementById('cn-button'),
    wrapper = document.getElementById('cn-wrapper');

  //open and close menu when the button is clicked
  var open = false;
  button.addEventListener('click', handler, false);

  function handler() {
    if (!open) {
      this.innerHTML = "Close";
      classie.add(wrapper, 'opened-nav');
    } else {
      this.innerHTML = "Menu";
      classie.remove(wrapper, 'opened-nav');
    }
    open = !open;
  }

  function closeWrapper() {
    classie.remove(wrapper, 'opened-nav');
  }

})();
/*!
 * classie - class helper functions
 * from bonzo https://github.com/ded/bonzo
 * 
 * classie.has( elem, 'my-class' ) -> true/false
 * classie.add( elem, 'my-new-class' )
 * classie.remove( elem, 'my-unwanted-class' )
 * classie.toggle( elem, 'my-class' )
 */

/*jshint browser: true, strict: true, undef: true */
/*global define: false */

(function(window) {

  'use strict';

  // class helper functions from bonzo https://github.com/ded/bonzo

  function classReg(className) {
    return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
  }

  // classList support for class management
  // altho to be fair, the api sucks because it won't accept multiple classes at once
  var hasClass, addClass, removeClass;

  if ('classList' in document.documentElement) {
    hasClass = function(elem, c) {
      return elem.classList.contains(c);
    };
    addClass = function(elem, c) {
      elem.classList.add(c);
    };
    removeClass = function(elem, c) {
      elem.classList.remove(c);
    };
  } else {
    hasClass = function(elem, c) {
      return classReg(c).test(elem.className);
    };
    addClass = function(elem, c) {
      if (!hasClass(elem, c)) {
        elem.className = elem.className + ' ' + c;
      }
    };
    removeClass = function(elem, c) {
      elem.className = elem.className.replace(classReg(c), ' ');
    };
  }

  function toggleClass(elem, c) {
    var fn = hasClass(elem, c) ? removeClass : addClass;
    fn(elem, c);
  }

  var classie = {
    // full names
    hasClass: hasClass,
    addClass: addClass,
    removeClass: removeClass,
    toggleClass: toggleClass,
    // short names
    has: hasClass,
    add: addClass,
    remove: removeClass,
    toggle: toggleClass
  };

  // transport
  if (typeof define === 'function' && define.amd) {
    // AMD
    define(classie);
  } else {
    // browser global
    window.classie = classie;
  }

})(window);
// EventListener | @jon_neal | //github.com/jonathantneal/EventListener
!window.addEventListener && window.Element && (function() {
  function addToPrototype(name, method) {
    Window.prototype[name] = HTMLDocument.prototype[name] = Element.prototype[name] = method;
  }

  var registry = [];

  addToPrototype("addEventListener", function(type, listener) {
    var target = this;

    registry.unshift({
      __listener: function(event) {
        event.currentTarget = target;
        event.pageX = event.clientX + document.documentElement.scrollLeft;
        event.pageY = event.clientY + document.documentElement.scrollTop;
        event.preventDefault = function() {
          event.returnValue = false
        };
        event.relatedTarget = event.fromElement || null;
        event.stopPropagation = function() {
          event.cancelBubble = true
        };
        event.relatedTarget = event.fromElement || null;
        event.target = event.srcElement || target;
        event.timeStamp = +new Date;

        listener.call(target, event);
      },
      listener: listener,
      target: target,
      type: type
    });

    this.attachEvent("on" + type, registry[0].__listener);
  });

  addToPrototype("removeEventListener", function(type, listener) {
    for (var index = 0, length = registry.length; index < length; ++index) {
      if (registry[index].target == this && registry[index].type == type && registry[index].listener == listener) {
        return this.detachEvent("on" + type, registry.splice(index, 1)[0].__listener);
      }
    }
  });

  addToPrototype("dispatchEvent", function(eventObject) {
    try {
      return this.fireEvent("on" + eventObject.type, eventObject);
    } catch (error) {
      for (var index = 0, length = registry.length; index < length; ++index) {
        if (registry[index].target == this && registry[index].type == eventObject.type) {
          registry[index].call(this, eventObject);
        }
      }
    }
  });
})();
```

```css
* {
  position: relative;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  list-style: none;
}

html,
body {
  height: 100%;
}

body {
  background: #52be7f;
  color: #fff;
}

.component {
  position: relative;
  margin-bottom: 3em;
  height: 15em;
  background: rgba(0, 0, 0, 0.05);
  font-family: 'Lato', Arial, sans-serif;
}

.component>h2 {
  position: absolute;
  overflow: hidden;
  width: 100%;
  text-align: center;
  text-transform: uppercase;
  white-space: nowrap;
  font-weight: 300;
  font-style: italic;
  font-size: 12em;
  opacity: 0.1;
  cursor: default;
}

.cn-button {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 11;
  margin-top: -2.25em;
  margin-left: -2.25em;
  padding-top: 0;
  width: 4.5em;
  height: 4.5em;
  border: none;
  border-radius: 50%;
  background: none;
  background-color: #fff;
  color: #52be7f;
  text-align: center;
  font-weight: 700;
  font-size: 1.5em;
  text-transform: uppercase;
  cursor: pointer;
  -webkit-backface-visibility: hidden;
}

.csstransforms .cn-wrapper {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 10;
  margin-top: -13em;
  margin-left: -13.5em;
  width: 27em;
  height: 27em;
  border-radius: 50%;
  background: transparent;
  opacity: 0;
  -webkit-transition: all .3s ease 0.3s;
  -moz-transition: all .3s ease 0.3s;
  transition: all .3s ease 0.3s;
  -webkit-transform: scale(0.1);
  -ms-transform: scale(0.1);
  -moz-transform: scale(0.1);
  transform: scale(0.1);
  pointer-events: none;
  overflow: hidden;
}

/*cover to prevent extra space of anchors from being clickable*/

.csstransforms .cn-wrapper:after {
  content: ".";
  display: block;
  font-size: 2em;
  width: 6.2em;
  height: 6.2em;
  position: absolute;
  left: 50%;
  margin-left: -3.1em;
  top: 50%;
  margin-top: -3.1em;
  border-radius: 50%;
  z-index: 10;
  color: transparent;
}

.csstransforms .opened-nav {
  border-radius: 50%;
  opacity: 1;
  -webkit-transition: all .3s ease;
  -moz-transition: all .3s ease;
  transition: all .3s ease;
  -webkit-transform: scale(1);
  -moz-transform: scale(1);
  -ms-transform: scale(1);
  transform: scale(1);
  pointer-events: auto;
}

.csstransforms .cn-wrapper li {
  position: absolute;
  top: 50%;
  left: 50%;
  overflow: hidden;
  margin-top: -1.3em;
  margin-left: -10em;
  width: 10em;
  height: 10em;
  font-size: 1.5em;
  -webkit-transition: all .3s ease;
  -moz-transition: all .3s ease;
  transition: all .3s ease;
  -webkit-transform: rotate(75deg) skew(62deg);
  -moz-transform: rotate(75deg) skew(62deg);
  -ms-transform: rotate(75deg) skew(62deg);
  transform: rotate(75deg) skew(62deg);
  -webkit-transform-origin: 100% 100%;
  -moz-transform-origin: 100% 100%;
  transform-origin: 100% 100%;
  pointer-events: none;
}

.csstransforms .cn-wrapper li a {
  position: absolute;
  right: -7.25em;
  bottom: -7.25em;
  display: block;
  width: 14.5em;
  height: 14.5em;
  border-radius: 50%;
  background: #429a67;
  background: -webkit-radial-gradient(transparent 35%, #429a67 35%);
  background: -moz-radial-gradient(transparent 35%, #429a67 35%);
  background: radial-gradient(transparent 35%, #429a67 35%);
  color: #fff;
  text-align: center;
  text-decoration: none;
  font-size: 1.2em;
  line-height: 2;
  -webkit-transform: skew(-62deg) rotate(-75deg) scale(1);
  -moz-transform: skew(-62deg) rotate(-75deg) scale(1);
  -ms-transform: skew(-62deg) rotate(-75deg) scale(1);
  transform: skew(-62deg) rotate(-75deg) scale(1);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  pointer-events: auto;
}

.csstransforms .cn-wrapper li a span {
  position: relative;
  top: 1em;
  display: block;
  font-size: .5em;
  font-weight: 700;
  text-transform: uppercase;
}

.csstransforms .cn-wrapper li a:hover,
.csstransforms .cn-wrapper li a:active,
.csstransforms .cn-wrapper li a:focus {
  background: -webkit-radial-gradient(transparent 35%, #449e6a 35%);
  background: -moz-radial-gradient(transparent 35%, #449e6a 35%);
  background: radial-gradient(transparent 35%, #449e6a 35%);
}

.csstransforms .opened-nav li {
  -webkit-transition: all .3s ease .3s;
  -moz-transition: all .3s ease .3s;
  transition: all .3s ease .3s;
}

.csstransforms .opened-nav li:first-child {
  -webkit-transform: skew(62deg);
  -moz-transform: skew(62deg);
  -ms-transform: skew(62deg);
  transform: skew(62deg);
}

.csstransforms .opened-nav li:nth-child(2) {
  -webkit-transform: rotate(30deg) skew(62deg);
  -moz-transform: rotate(30deg) skew(62deg);
  -ms-transform: rotate(30deg) skew(62deg);
  transform: rotate(30deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(3) {
  -webkit-transform: rotate(60deg) skew(62deg);
  -moz-transform: rotate(60deg) skew(62deg);
  -ms-transform: rotate(60deg) skew(62deg);
  transform: rotate(60deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(4) {
  -webkit-transform: rotate(90deg) skew(62deg);
  -moz-transform: rotate(90deg) skew(62deg);
  -ms-transform: rotate(90deg) skew(62deg);
  transform: rotate(90deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(5) {
  -webkit-transform: rotate(120deg) skew(62deg);
  -moz-transform: rotate(120deg) skew(62deg);
  -ms-transform: rotate(120deg) skew(62deg);
  transform: rotate(120deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(6) {
  -webkit-transform: rotate(150deg) skew(62deg);
  -moz-transform: rotate(150deg) skew(62deg);
  -ms-transform: rotate(150deg) skew(62deg);
  transform: rotate(150deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(7) {
  -webkit-transform: rotate(180deg) skew(62deg);
  -moz-transform: rotate(180deg) skew(62deg);
  -ms-transform: rotate(180deg) skew(62deg);
  transform: rotate(180deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(8) {
  -webkit-transform: rotate(210deg) skew(62deg);
  -moz-transform: rotate(210deg) skew(62deg);
  -ms-transform: rotate(210deg) skew(62deg);
  transform: rotate(210deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(9) {
  -webkit-transform: rotate(240deg) skew(62deg);
  -moz-transform: rotate(240deg) skew(62deg);
  -ms-transform: rotate(240deg) skew(62deg);
  transform: rotate(240deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(10) {
  -webkit-transform: rotate(270deg) skew(62deg);
  -moz-transform: rotate(270deg) skew(62deg);
  -ms-transform: rotate(270deg) skew(62deg);
  transform: rotate(270deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(11) {
  -webkit-transform: rotate(300deg) skew(62deg);
  -moz-transform: rotate(300deg) skew(62deg);
  -ms-transform: rotate(300deg) skew(62deg);
  transform: rotate(300deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(12) {
  -webkit-transform: rotate(330deg) skew(62deg);
  -moz-transform: rotate(330deg) skew(62deg);
  -ms-transform: rotate(330deg) skew(62deg);
  transform: rotate(330deg) skew(62deg);
}

.no-csstransforms .cn-wrapper {
  overflow: hidden;
  margin: 10em auto;
  padding: .5em;
  text-align: center;
}

.no-csstransforms .cn-wrapper ul {
  display: inline-block;
}

.no-csstransforms .cn-wrapper li {
  float: left;
  width: 5em;
  height: 5em;
  background-color: #fff;
  text-align: center;
  font-size: 1em;
  line-height: 5em;
}

.no-csstransforms .cn-wrapper li a {
  display: block;
  width: 100%;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

.no-csstransforms .cn-wrapper li a:hover,
.no-csstransforms .cn-wrapper li a:active,
.no-csstransforms .cn-wrapper li a:focus {
  background-color: #f8f8f8;
}

.no-csstransforms .cn-wrapper li.active a {
  background-color: #6F325C;
  color: #fff;
}

.no-csstransforms .cn-button {
  display: none;
}

@media only screen and (max-width: 620px) {
  .no-csstransforms li {
    width: 4em;
    height: 4em;
    line-height: 4em;
  }
}

@media only screen and (max-width: 500px) {
  .no-ccstransforms .cn-wrapper {
    padding: .5em;
  }
  .no-csstransforms .cn-wrapper li {
    width: 4em;
    height: 4em;
    font-size: .9em;
    line-height: 4em;
  }
}

@media only screen and (max-width: 480px) {
  .csstransforms .cn-wrapper {
    font-size: .68em;
  }
  .cn-button {
    font-size: 1em;
  }
}

@media only screen and (max-width:420px) {
  .no-csstransforms .cn-wrapper li {
    width: 100%;
    height: 3em;
    line-height: 3em;
  }
}
```

```html
<html>

<body>

  <div class="container">
    <div class="component">
      <h2>Hi</h2>
      <!-- Start Nav Structure -->
      <button class="cn-button" id="cn-button">Menu</button>
      <div class="cn-wrapper" id="cn-wrapper">
        <ul>
          <li>
            <a href="#">
              <span>Home</span>
              <svg class="caticon" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="35px" height="70px" viewBox="0 0 512 512" enable-background="new 0 0 50 50" xml:space="preserve">
                                    <path fill="white" id="shop-3-icon" d="M79.792,217.25v235h352.75v-235H79.792z M397.542,381.75h-282.75v-129.5h282.75V381.75z M220.62,59.75
                                                  l-17.798,85.332h-0.081v17.34c0,18.314-14.847,33.161-33.161,33.161s-33.16-14.847-33.16-33.161v-17.34l50.841-85.332H220.62z
                                                  M168.232,59.75l-51.91,85.332v17.34c0,18.314-14.847,33.161-33.161,33.161S50,180.736,50,162.422v-17.34l83.666-85.332H168.232z
                                                  M462,145.082v17.34c0,18.314-14.847,33.161-33.161,33.161s-33.161-14.847-33.161-33.161v-17.34l-51.91-85.332h34.566L462,145.082z
                                                  M289.08,145.082h0.081v17.34c0,18.314-14.847,33.161-33.161,33.161s-33.161-14.847-33.161-33.161v-17.34h0.081l16.729-85.332
                                                  h32.703L289.08,145.082z M324.739,59.75l50.841,85.332v17.34c0,18.314-14.846,33.161-33.16,33.161s-33.161-14.847-33.161-33.161
                                                  v-17.34h-0.081L291.38,59.75H324.739z" />
                                </svg>
            </a>
          </li>
          <li><a href="#"><span>Furniture</span></a></li>
          <li><a href="#"><span>Transport</span></a></li>
          <li><a href="#"><span>Gift</span></a></li>
          <li><a href="#"><span>Clothes</span></a></li>
          <li><a href="#"><span>Games</span></a></li>
          <li><a href="#"><span>Stationary</span></a></li>
          <li><a href="#"><span>Toys</span></a></li>
          <li><a href="#"><span>Books</span></a></li>
          <li><a href="#"><span>Login</span></a></li>
          <li><a href="#"><span>Register</span></a></li>
          <li><a href="#"><span>Sell</span></a></li>
        </ul>
      </div>
      <!-- End of Nav Structure -->
    </div>
  </div>
  <!-- /container -->

</body>

</html>
```