round %}{{ page.image.background }}{% else %}{{ site.background }}{% endif %}{% endcapture %}
{% unless background contains 'http://' or background contains 'https://' %}{% capture background %}{{ site.url }}/images/{{ background }}{% endcapture %}{% endunless %}
<style type="text/css">body {background-image:url({{ background }});}</style>
{% endif %}
