Trying to convert this into erb

masthead

<header class="masthead--{{ page.active }}">
  {% if include.menu != 'off' %}
    {% include navigation.html %}
  {% endif %}

  {% if include.menu == "only" %}

  {% elsif page.masthead_content %}
    <div class="masthead--content">
      <p>{{ page.masthead_content }}</p>
    </div>
  {% endif %}


</header>