Logo and Menu cut in mobile

Hi,

Would you help me understand what's is going on on the mobile rendering of www.synchron.net.br ?
The logo is cut at the bottom and the menu does not appear.

Thank you for your help.

Fred

The problem is with this declaration in override.css:

Code: Select all

#gkLogo {
  width: 220px;
  height: 101px;
}