When i click the "AboSee" tab, it opens the tab, but does not show the tab bar

When I click on the AboSee tab, it opens the tab, but then the tab bar does not show. Here is the link to my website: https://abohisham-ghanoum.netlify.app

This is how it looks like before

And when i click, it looks like this

So i want the tab bar and tabs to show when i click the AboSee button