anchor.diff:  		    	<p class="p_block align_center"><%=t('contest_page.video_vote')%><span class="fa fa-chevron-down" id="open_video"></span></p>
   		    </div>
   
  -		    <!-- <div class="content_block" id="video_block"> -->
  -		    <div class="content_block" id="video_block">
  -				      <iframe class="video_presentation" width="680" height="250" src="https://www.youtube.com/embed/4J5TJsINiTc" frameborder="0" allowfullscreen></iframe>
  +				<div id="video_block">
  +			    <div class="content_block">
  +			    		<div class="video_block">
  +					      <iframe class="video_presentation" width="480" height="250" src="https://www.youtube.com/embed/4J5TJsINiTc" frameborder="0" allowfullscreen></iframe>
  +					     </div>
  +					</div>
   				</div>
   				</br>
   			<% end %>
  
positive.code:  		transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
   	}
  
   	.video_block_accordion iframe {
  		max-width: 100%;
      height: 25em;
   	}
  
   	.video_block_accordion.closed {
   		opacity: 0;
   		transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
   	}
  
   	#video_block {
   		display: none;
  
   	}
  
  
  
negative.code: 
  <style type="text/css">
  
   	
   	#open_video {
   		cursor: pointer;
   		margin-left: 1em;
  