Why is the user agent sylesheet different?

Question

css

Transferred the site from local to hosting, and noticed that the styles differ on the copy. The content of the page is the same, the css is the same, but the usert agent style is different, why Google Chrome adds an indent of 1em is not clear:

Answer 1

and !DOCTYPE did not change? I'm guessing it might be the problem (HTML vs. XHTML)