I'm experiencing a problem that's been driving me crazy for hours. The main page I'm building is using CSS grid layout and everything is normal until "portrait tablet", but now that I want to adjust the sidebar and grid layout in "landscape tablet" everything gets messed up and the sidebar won't show itself. Even the grid is messed up and isn't following the dimensions I give its column.
The whole project (It's just the main page) with it's codes are in my GitHub page and the website itself is here.
I would really really really appreciate it if someone helps me solve this issue that's driving me insane.
Thanks in advance!