Previously we implemented adding highlighting to code blocks. https://zelikk.blogspot.com/2024/05/blogspot-code-prettify.html However, if a line is too long, it ends up looking like this. Using the mouse to drag and select is very inconvenient. It would be great if there were a copy button at this point. I always thought it was complicated before. Since I have the motivation again today, let's look into it.