I’m experiencing some FOUC (flash-of-unstyled-content) with the second-menu on my page http://www.salonivon.nl/webshop. The second menu is made by the plugin AP Mega Menu. It loads the descriptions of each category in a split second, in which it disappears using display: none CSS.
Is there any way to hide the class “wpmm-target-description wpmm-target-text” without CSS, as this loads after javascript etc?
Ah, you mean the menu loads over the image and than is getting placed below the image? You could consider a simple preloader wich solves this problem.
If you do not want this, you can set a fixed height on the header part with css. Just make sure you load this inline (inside your template, not via an external css file).