Student in need of help

So the css in this post is broken only on iphones if we view it on an android phone then there is no issues, and I can't figure out why? the scroll background is looking wired, but it's defined by: width: 60px; height: 60px;...

Anyhow i'm just wondering why the css is not working as it should? Please help me 🙏

Student in need of help
 
 
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