"Tabs Style" for sub menu item - Does not work

When using tabs style.
The modules appear at the bottom

The problem is caused by the width of this div

<div class="megacol column1 first" style="width: 800px;"></div>
<ul class="megamenu level1"></ul>

Removing that property will solve the problem

But I can not locate the file or script where this div is located.
They can support me to locate it and make the correction

I attached screenshots of the problem I comment on.

Hello,
Thanks for contacting us and choosing our product!
About your problem, Please go to menus -> MenuBarLeft -> Noticias item -> Tab Parameters(JUX Mega Menu Extended) -> change config value
Thanks!