I created a fullscreen icon using metronic theme :
<div class="portlet light portlet-fit portlet-datatable red-flamingo box">
<div class="portlet-title">
<div class="caption">
<i class="fa fa-check-circle" aria-hidden="true"></i>
<span class="order-number"> Fullscreen me</span>
</div>
<div class="tools">
<a href="" class="fullscreen" data-original-title="" title=""> </a>
</div>
</div>
<div class="portlet-body">
Content
</div>
</div>
This created a div which looks like this in chrome: Div Preview
Whenever it is clicked for fullscreen, the button changes into this: weird looking icon and it remains like that until we click somewhere else.
I think this problem is caused because it remains highlighted even after click; and hence this could be solved if the highlighting of icons occurs only on mouse hover. Any ideas on how to solve this small glitch?