A basic mobile dropdown menu for shopify stores

mobile-menu.liquid

{% assign found_active_link = false %}
<select name="main_navigation" id="main_navigation" class="fl">
  {% for link in linklists.main-menu.links %}
    {% if link.active %}
    <option value="{{ link.url }}" selected="selected">{{ link.title }}</option>
    {% assign found_active_link = true %}
    {% else %}
    <option value="{{ link.url }}">{{ link.title }}</option>
    {% endif %}
    {% for childlink in linklists[link.handle].links %}
      {% if childlink.active %}
      <option value="{{ childlink.url }}" selected="selected">- {{ childlink.title }}</option>
      {% assign found_active_link = true %}
      {% else %}
      <option value="{{ childlink.url }}">- {{ childlink.title }}</option>
      {% endif %}
    {% endfor %}
  {% endfor %}
  {% unless found_active_link %}
  <option value="" selected="selected">{{ page_title }}</option>
  {% endunless %}
  <option value="/cart">Your cart ({{ cart.item_count }})</option>
</select>