
            <core-layout align="center"></core-layout>
            <h3>Title</h3>
            <button>hello</button>
          </div>
          <div core-flex>
            <core-layout></core-layout>
            <div core-flex class="core-relative">
              Main content
              <div class="abs">abs pos :)</div>
            </div>
            <div>Sidebar content</div>
          </div>
          <div>Some more stuffs...</div>
          <div>
            <core-layout justify="end"></core-layout>
