Alright hear me out.
The tutorial button is off by 1 pixel in height at default 100% browser zoom.
edit: seems to only be on some pages.
From what I've noticed, the following pages are misaligned:
index.php
companies.php
item.php
gym.php
properties.php
hospitalview.php
casino.php
These pages are okay:
page.php?sid=education
page.php?sid=events
page.php?sid=hof
I'm sure the list can go on- but there's a pattern.