load all images in static_file
{:% for image in site.static_files %}
{:% if image.path contains 'img/ARTMIA-curtain' %}
{:% if image.extname == '.jpg' %}
<a href="" title="">
<div style="width:200px; height:365px; float:left; margin:3px 3px; display:inline; background-image:url(); background-repeat:no-repeat; background-size:auto;"></div>
</a>
{:% endif %}
{:% endif %}
{:% endfor %}
if you have file list ,just use for loop
{:% for i in (1..98) %}
<a href="/img/ARTMIA-curtain/.jpg">
<div style="width:200px; height:356px; float:left; margin:3px 3px; display:inline; background-image:url(/img/ARTMIA-curtain/.jpg);"></div>
</a>
{:% endfor %}