How to use fixed width in AT Panels everywhere (site template)? I am using the AT Panels Everywhere theme and its ATPanels Everywhere Site Template. However, apparently it overrides the At panels everywhere theme because the width seems to be fluid and not fixed. How can I change the width to fixed? I tried it in admin/structure/pages/site_template and added css code but nothing changes. The site keeps it fluid width. 

/* set a fixed overall width */
  #page-wrapper  {
    width: 960px;
    margin-left: auto;
    margin-right: auto;
  }

  /* Add some margin to the main content row. This class was set in the layout designer. */
  #page-wrapper .main-content {
    padding: 0 10px;
  }


The question is: How can I create a fixed width with AT panels everywhere site template?
Found the answer: look at default site template, copy-paste the css of the sample variant and set the page-wrapper.