Styles may be lost when converting HTML to PDF. This may be because the PDF conversion library used does not support all CSS styles or HTML elements. In addition, there may be coding problems or lack of fonts during conversion. Click to learn the excellent course of famous teachers from big factories.

In order to solve this problem, the following methods can be considered:

1. Select a PDF conversion library that fully supports CSS and HTML elements;

2. Use common CSS attributes and elements in HTML, and avoid using uncommon attributes and elements;

3. Ensure the correct encoding and necessary fonts are used in the conversion process;

4. Try to manually add some styles to the converted PDF file to achieve better rendering effect.

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