1. Use the font 12 to keep comfortable when reading.
2. The line spacing should be greater than 1.5 times to increase readability.
3. There should be blank lines between paragraphs for distinguishing and reading.
4. Use headings and subheadings to organize the content, but pay attention to the choice of hierarchy to maintain the hierarchical structure.
5. For charts and pictures, you should choose the appropriate size and resolution to keep clear when printing.
6. Use marginal notes or footnotes to explain quotations or additional information to keep the text clear and easy to understand.
7. For English texts, British or American English should be used to keep the consistency of the whole text.
These specifications can help you maintain consistency and readability when typesetting sustainable articles, but the specific requirements may vary from publication to platform.