I created the following snippet in Sublime Text. It seems doesn't get triggered by the tab. If I change the contents to some other language, or some plain text, it is working. For html, it doesn't work. Any help is appreciated.
<snippet>
<content><![CDATA[
<li class="timeline-inverted">
<div class="timeline-badge ${1:type)"><i class="fa fa-calendar"></i></div>
<div class="timeline-panel wow fadeInDown">
<div class="timeline-heading">
<h4 class="timeline-title">${2:year}</h4>
</div>
<div class="timeline-body">
<p>${3:data}</p>
</div>
</div>
</li>
]]></content>
<!-- Optional: Set a tabTrigger to define how to trigger the snippet -->
<tabTrigger>tmeln</tabTrigger>
<description>timeline-body</description>
</snippet>