Today I will write a jsp page. I will adjust it all the time. <div style=margin:0 auto>123xxx</div> No matter how you do this, you can't let the page be displayed in the center, and other styles also have inexplicable problems.
Later I found a solution to this problem:
It turns out that L-Blog does not add DTD before HTML by default, so IE interprets the document using HTML instead of XHTML.
The problem is not in CSS but in the XHTML web page itself.
This code is needed to make the above settings effective:
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