Clicking Support menu expands width on mobile

[aussig]

Describe the bug Clicking the Support menu on a mobile device temporarily expands the width of the content of the page, which looks ugly.

To Reproduce Steps to reproduce the behavior:

1. Go to home page on a mobile device
2. Click on Support

Expected behavior The menu should pop up, but not cause the page design to become wider.

Smartphone (please complete the following information):

• Device: All