If your page looks great on desktop but it doesn't look as great on mobile and you need to adjust your margins and padding. And here's how to do that.
First is navigate to the page you want to edit.
Go inside the page, and click on the section you wish to edit.
Adjust the Margin & Padding according to your preference.
Note: Margin adjustments on desktop apply to mobile as well.
However, mobile margin adjustments don't affect desktop, allowing different margins for both.