Solved On mobile contents that disappear

Another important problem when viewing the web on the mobile is that the contents of the upper bar appear a

second and disappear, it is a moment ... but it is very bad

See on the mobile phone: https://beta.centrodeadiccionesred.com/
When you access any page (it's under construction) or update it, you see those contents for a moment and

disappear.

I understand that these contents should not appear on the mobile, right? This has a solution?

Thank you

 

It is already done and working correctly.
Thank you