text: const links = document.querySelectorAll('link[rel="import"]');
  
  Array.prototype.forEach.call(links, function(link){
    let template = link.import.querySelector('.app-template');
    let clone = document.importNode(template.content, true);
    if (link.href.match('about.html')) {
      document.querySelector('body').appendChild(clone)
    } else {
      document.querySelector('.content').appendChild(clone);
    }
  
  });
  