ent.querySelector('template#css-build-comment');
          const buildComment = template.content.firstChild;
          assert.instanceOf(
            buildComment,
            Comment,
            'first child of template content should be a Comment'
          );
          makeElement('css-build-comment');
          const div = template.content.querySelector('div');
          const divClasses = Array.from(div.classList);
          assert.includeMembers(divClasses, [
            'style-scope',
            'c