{% assign width = include.width | default: 24 %}
{% assign height = include.height | default: 24 %}
<svg xmlns="http://www.w3.org/2000/svg" width="{{ width }}" height="{{ height }}"{% if include.class %} class="{{ include.class }}"{% endif%}>
  <rect width="{{ width }}" height="{{ height }}" x="0" y="0" fill="#ddd"></rect>
</svg>