Problems adding this multi-step form

Hello, I am trying to add this code to my forums, this is what I'm trying to add and off this website: http://thecodeplayer.com/walkthrough/jquery-multi-step-form-with-progress-bar

I've done everything it's said to do, I've added the HTML to the HTML module, CSS in Display and Javascript in Javascript management however whenever I preview the HTML it comes up with this:



EDIT: After selecting Yes to "Do you wish to use your forum header and footer ?" It seems to be working however it doesn't look quite right?

Code:

<!-- multistep form -->
<form id="msform">
   <!-- progressbar -->
   <ul id="progressbar">
      <li class="active">Account Setup</li>
      <li>Social Profiles</li>
      <li>Personal Details</li>
   </ul>
   <!-- fieldsets -->
   <fieldset>
      <h2 class="fs-title">Create your account</h2>
      <h3 class="fs-subtitle">This is step 1</h3>
      <input type="text" name="email" placeholder="Email" />
      <input type="password" name="pass" placeholder="Password" />
      <input type="password" name="cpass" placeholder="Confirm Password" />
      <input type="button" name="next" class="next action-button" value="Next" />
   </fieldset>
   <fieldset>
      <h2 class="fs-title">Social Profiles</h2>
      <h3 class="fs-subtitle">Your presence on the social network</h3>
      <input type="text" name="twitter" placeholder="Twitter" />
      <input type="text" name="facebook" placeholder="Facebook" />
      <input type="text" name="gplus" placeholder="Google Plus" />
      <input type="button" name="previous" class="previous action-button" value="Previous" />
      <input type="button" name="next" class="next action-button" value="Next" />
   </fieldset>
   <fieldset>
      <h2 class="fs-title">Personal Details</h2>
      <h3 class="fs-subtitle">We will never sell it</h3>
      <input type="text" name="fname" placeholder="First Name" />
      <input type="text" name="lname" placeholder="Last Name" />
      <input type="text" name="phone" placeholder="Phone" />
      <textarea name="address" placeholder="Address"></textarea>
      <input type="button" name="previous" class="previous action-button" value="Previous" />
      <input type="submit" name="submit" class="submit action-button" value="Submit" />
   </fieldset>
</form>

<!-- jQuery -->
<script src="http://thecodeplayer.com/uploads/js/jquery-1.9.1.min.js" type="text/javascript"></script>
<!-- jQuery easing plugin -->
<script src="http://thecodeplayer.com/uploads/js/jquery.easing.min.js" type="text/javascript"></script>

Code:

/*form styles*/
#msform {
   width: 400px;
   margin: 50px auto;
   text-align: center;
   position: relative;
}
#msform fieldset {
   background: white;
   border: 0 none;
   border-radius: 3px;
   box-shadow: 0 0 15px 1px rgba(0, 0, 0, 0.4);
   padding: 20px 30px;
   
   box-sizing: border-box;
   width: 80%;
   margin: 0 10%;
   
   /*stacking fieldsets above each other*/
   position: absolute;
}
/*Hide all except first fieldset*/
#msform fieldset:not(:first-of-type) {
   display: none;
}
/*inputs*/
#msform input, #msform textarea {
   padding: 15px;
   border: 1px solid #ccc;
   border-radius: 3px;
   margin-bottom: 10px;
   width: 100%;
   box-sizing: border-box;
   font-family: montserrat;
   color: #2C3E50;
   font-size: 13px;
}
/*buttons*/
#msform .action-button {
   width: 100px;
   background: #27AE60;
   font-weight: bold;
   color: white;
   border: 0 none;
   border-radius: 1px;
   cursor: pointer;
   padding: 10px 5px;
   margin: 10px 5px;
}
#msform .action-button:hover, #msform .action-button:focus {
   box-shadow: 0 0 0 2px white, 0 0 0 3px #27AE60;
}
/*headings*/
.fs-title {
   font-size: 15px;
   text-transform: uppercase;
   color: #2C3E50;
   margin-bottom: 10px;
}
.fs-subtitle {
   font-weight: normal;
   font-size: 13px;
   color: #666;
   margin-bottom: 20px;
}
/*progressbar*/
#progressbar {
   margin-bottom: 30px;
   overflow: hidden;
   /*CSS counters to number the steps*/
   counter-reset: step;
}
#progressbar li {
   list-style-type: none;
   color: white;
   text-transform: uppercase;
   font-size: 9px;
   width: 33.33%;
   float: left;
   position: relative;
}
#progressbar li:before {
   content: counter(step);
   counter-increment: step;
   width: 20px;
   line-height: 20px;
   display: block;
   font-size: 10px;
   color: #333;
   background: white;
   border-radius: 3px;
   margin: 0 auto 5px auto;
}
/*progressbar connectors*/
#progressbar li:after {
   content: '';
   width: 100%;
   height: 2px;
   background: white;
   position: absolute;
   left: -50%;
   top: 9px;
   z-index: -1; /*put it behind the numbers*/
}
#progressbar li:first-child:after {
   /*connector not needed before the first step*/
   content: none;
}
/*marking active/completed steps green*/
/*The number of the step and the connector before it = green*/
#progressbar li.active:before,  #progressbar li.active:after{
   background: #27AE60;
   color: white;
}


Code:

//jQuery time
var current_fs, next_fs, previous_fs; //fieldsets
var left, opacity, scale; //fieldset properties which we will animate
var animating; //flag to prevent quick multi-click glitches

$(".next").click(function(){
   if(animating) return false;
   animating = true;
   
   current_fs = $(this).parent();
   next_fs = $(this).parent().next();
   
   //activate next step on progressbar using the index of next_fs
   $("#progressbar li").eq($("fieldset").index(next_fs)).addClass("active");
   
   //show the next fieldset
   next_fs.show();
   //hide the current fieldset with style
   current_fs.animate({opacity: 0}, {
      step: function(now, mx) {
         //as the opacity of current_fs reduces to 0 - stored in "now"
         //1. scale current_fs down to 80%
         scale = 1 - (1 - now) * 0.2;
         //2. bring next_fs from the right(50%)
         left = (now * 50)+"%";
         //3. increase opacity of next_fs to 1 as it moves in
         opacity = 1 - now;
         current_fs.css({'transform': 'scale('+scale+')'});
         next_fs.css({'left': left, 'opacity': opacity});
      },
      duration: 800,
      complete: function(){
         current_fs.hide();
         animating = false;
      },
      //this comes from the custom easing plugin
      easing: 'easeInOutBack'
   });
});

$(".previous").click(function(){
   if(animating) return false;
   animating = true;
   
   current_fs = $(this).parent();
   previous_fs = $(this).parent().prev();
   
   //de-activate current step on progressbar
   $("#progressbar li").eq($("fieldset").index(current_fs)).removeClass("active");
   
   //show the previous fieldset
   previous_fs.show();
   //hide the current fieldset with style
   current_fs.animate({opacity: 0}, {
      step: function(now, mx) {
         //as the opacity of current_fs reduces to 0 - stored in "now"
         //1. scale previous_fs from 80% to 100%
         scale = 0.8 + (1 - now) * 0.2;
         //2. take current_fs to the right(50%) - from 0%
         left = ((1-now) * 50)+"%";
         //3. increase opacity of previous_fs to 1 as it moves in
         opacity = 1 - now;
         current_fs.css({'left': left});
         previous_fs.css({'transform': 'scale('+scale+')', 'opacity': opacity});
      },
      duration: 800,
      complete: function(){
         current_fs.hide();
         animating = false;
      },
      //this comes from the custom easing plugin
      easing: 'easeInOutBack'
   });
});

$(".submit").click(function(){
   return false;
})


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