<header class=“demo-header mdl-layout__header mdl-layout__header–scroll mdl-color–grey-100 mdl-color-text–grey-800”>

<div class="mdl-layout__header-row">
  {% if page.title %}
    <span class="mdl-layout-title">{{ page.title }}</span>
  {% else %}
    <span class="mdl-layout-title">{{ site.title }}</span>
  {% endif %}
  <div class="mdl-layout-spacer"></div>
</div>

</header>