如何在Jupyter Notebook中为Markdown标题添加颜色且保留标题格式（无需冗长CSS）

Great question! I’ve run into this exact issue in Jupyter Notebook before. The problem with wrapping the entire ## TEST in a <span> is that Markdown’s heading syntax gets ignored when it’s nested inside an HTML tag. Luckily, there are two simple, concise ways to add color to your headings without losing their default formatting (and no lengthy CSS required):

Method 1: Use HTML heading tags with inline style #

Instead of relying on Markdown’s ## syntax, use the equivalent HTML heading tag and add your color style directly to it. For example:

<h2 style="color:green;">TEST</h2>

This keeps all the default heading styling (size, boldness) while applying your chosen color. Just swap h2 with h1 (for #), h3 (for ###), etc., to match the heading level you need.

Method 2: Keep Markdown heading syntax, wrap only the text in a span #

Leave the Markdown heading symbols outside the <span> tag so the parser recognizes it as a heading, then wrap just the text content to add color. Like this:

## <span style='color:green'>TEST</span>

Jupyter will render this as an h2 heading with green text—perfect if you prefer sticking to Markdown’s familiar heading syntax.

Both methods work seamlessly in Jupyter Notebook and don’t require any extra setup or external CSS files. Hope this solves your problem!

内容的提问来源于stack exchange，提问作者Sam Wong