Hello @SusanKL9 ,
Currently the way to do this would be to drag over spacer blocks, then make the side-columns with spacers as skinny as the system will allow.
However if you're working with multiple columns, this wouldn't really work. There isn't a precise side-padding functionality in the regular email builder at this time.
Based on your wording, the only thing that comes to mind is either a very old, outdated thread that might be referring to the long-dead second-generation editor (2GE) or event the 1GE builders that used to allow HTML access. If you're wanting to use HTML to fine-tune and build your emails, I'd recommend using the custom code editor.
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