Related issues when converting HTML to PDF format

Test aspose pdf for java, convert HTML to PDF format, and upload the relevant files.
After conversion, the style is modified and overlap occurs. What should be done?
In addition, can the page size of the converted PDF be edited?

text1.zip (776.6 KB)

@xingyu11

Can you please provide more details about the specific HTML content you are trying to convert and the desired page size for the PDF?