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Just as a general comment, the website is extremely hard to read at the default zoom, mainly due to the font size but also due to the lack of contrast on the background color and text color. The code samples in particular are very hard to read due to this.
Thank you. Will have a think. Question - does dark theme and light theme both have the contrast issue?
The light theme is a little bit better. I usually don't have a problem with text without much contrast though, so you may want to get opinions other than mine. The main problem for me is the small text size.