I have the advanced mode enabled.
In my global block, I have:
margin 0px 0px 0px 0px.
padding 0px 0px 0px 0px
Set for Section, Row, And Column.
But the content within the global block still has spacing added in the Section.
So when I nest a global block inside my content, it adds space.
According to your documentation at: https://theme.co/apex/forum/t/global-blocks/24723
“Do Global Blocks come with any extra markup?
Global Blocks will always be wrapped in a Section, Row, and Column. Because Global Blocks need to support whole sections, this means that all of the markup that comes with a Section is always output around your content. If you wish to create a Global Block that is just a singular element as mentioned previously, you will need to make sure to remove all of the spacing (e.g. margins, padding, et cetera) that comes with these containing elements. You can quickly remove all spacing from containing elements by clicking the Remove Spacing button at the bottom of your Sections in the Layout pane.”
There is no “Remove Spacing” button in the layout pane: