Hey @nell_a, thanks for raising this! I had a look on my end and it looks like at the moment, there isn't a way to change the line spacing on the item description.
I would like to convert this to a feature request. Please could you relocate this post to the appropriate board?
Being able to edit the line spacing is a fundamental formatting technique which should be available. Without it the line spacing on the user's website won't match all other forms of marketing copywriting when ever the branding stipulates line spacing other than 1 should be used.
I strongly agree with this post. If we are able to use custom fonts we have to be able to control vertical line spacing in order to be able to ensure fonts don't overlap each-other.
