How to remove space above first color section?

I’m working on a page, and it has about 30mm of space above the first color section, and I want to remove it. Looking at the code, it looks like this is making the space:

<div class="main_color container_wrap fullsize">
     <div class="container">
          <main class="template-page content  av-content-full alpha units" itemprop="mainContentOfPage" role="main">
                  <div class="post-entry post-entry-type-page post-entry-3231">
                         <div class="entry-content-wrapper clearfix"></div>
                 </div>
           </main>
     </div>
</div>

I am using the advanced layout editor, so I don’t know why this space or code would be there. It’s not showing in the layout editor.