Hello,

I have checked your site and it looks like the problem is coming from your stylesheet at https://www.arena.cards/components/com_virtuemart/assets/css/vm-ltr-common.css?vmver=9410252b . It is resetting all div with the class of "clear" and this is really bad that they are doing this, http://take.ms/xmkKu

To fix this, your best bet is to add the following into /administrator/templates/isis/css/template.css

[gist]
#ed .clear {
line-height: inherit !important;
font-size: inherit !important;
}
[/gist]