DataSpell Jupyter Notebook Markdown Font Style, Size, and Line Spacing

On DataSpell 2024.1, is it possible to:
(1) Increase the font size
(2) Increase the line spacing
for the markdown cell in Jupyter Notebook?

The line spacing looks terrible when there are too many words:

Also it seems impossible to change the size of the picture:

<img src="./img/monty.jpg" style="width:400px">

and

<img src="./img/monty.jpg" style="width:1000px">

gives the same size of the picture, even though I change the width to 1000px.