How to make markdown cell larger?

Hi all,
I want to use observable notebook to have a better display version of coursework compared with pdf. I’m trying to make a display of my findings through markdown cell tables, however I don’t know how to make the cell have a larger width.

With a larger width, the text can be displayed in one line.

It’s even better if you can tell me how to change the default width of all markdown cell!!

Markdown cells wrap text content in HTML <p> tags. Thus, you can generally change the default width of markdown cells by adding an HTML cell with the following content:

  p {
    max-width: 1000px

If your cells produce tables and other content, then you might need to target your CSS at other tags. There are also techniques to target content more specifically.