Firstly, I'd like to share the link with you:
While everything looks good in Chrome, the slider in Firefox seems to be pushed to the right side. This issue arises because the height of 'nav.navbar.navigation-9' is set to 50px. Even though I changed it to 40px, it reverts back to 50px after the page loads, causing the slider to shift to the right.
I've exhausted all my known solutions to fix this problem; any assistance would be greatly appreciated.