Using the Style Editor popup, you can change the spacing of, rows, columns and text as needed.
What is Margin and Padding
Margin in the spacing OUTSIDE of an element, Padding is INSIDE the element.
In our example above of a black outlined content box. It has margins set on the bottom (Orange) and Padding inside left and right (blue) preventing the text from touching the edges.
Viewing the current margin and padding sizes via the Style Editor
Changing the current margin and padding sizes via the Style Editor
Adjusting margin and padding on mobile, viewing changes on mobile
Setting spacing on desktop will also effect mobile by default, but you change choose from some common options to change how spacing looks on mobile, via the MOBILE tab in the Style Editor.
To view how it will look on mobile preview the site in a new tab and use the Right click > INSPECT ELEMENT option, then CTRL + SHIFT + M. Alternatively you can change the Editor Size dropdown to Mobile to view changes in the CMS.
Using the mobile preview in a new tab is a good option if you are looking to make tweaks all over the site, you can leave it open in a separate tab while editing and do not have to change editor size to see how it looks, simply refresh the preview tab.