The selected style for nav menu items is missing

[Cindy Qi Li]

Describe the bug

The selected style for nav menu items is missing. The selected menu item is not highlighted at all.

To Reproduce

Steps to reproduce the behavior:

1. Go to the home page;
2. Click "About" on the navigation menu;
3. The about page shows up but the “About" menu item doesn't have selected style applied.

Expected behavior

The “About" menu item should have selected style as in the design.

Screenshots

[Cindy Qi Li]

The fix is included in #933

[Cindy Qi Li]

Fixed with the merge of #933.