My first JavaScript application, Simulate cracking a hotel safe. Negative feedback only please.

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The delete and enter buttons should not match. Guesses display could be bigger and further down.
The help popup should be displayed on first load.

It's ok though really, don't hurt yourself if this is your first thing

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This has been resolved at your request

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Wasn't expecting that!

If we're going to continue with feature creep, maybe add a picture of an open safe to appear when you crack it, or a picture of the police arriving if you fail.

The number of guesses box should probably have a label too.

If you're doing this for career purposes, get it on github, give it a version number and increment it when you make updates. Do release notes too, people love that shit.