Heading

1. From your Shopify admin, go to Online Store -> Themes.

2. Find the theme that you want to edit, and then click Customize.

3. Scroll down to Popup group at the bottom, Click Add section and choose "Toolbar mobile".

4. From the side menu, select Newsletter popup. Click + Add block and select "Heading" block, or click the Search bar to enter a search term.

Setting	Description
Heading	Add text to display as a section heading (Leave the field blank to hide the heading)
Heading size	Font size of text: Default XX-Small X-Small Small Medium Large X-Large XX-Large XXX-Large

Block padding

Setting	Description
Top margin	Determines the height of the top outside space of the section. Can be from 0px to 100px, increasing arithmetically of 1px (pixel).
Bottom margin	Determines the height of the bottom outside space of the section. Can be from 0px to 100px, increasing arithmetically of 1px (pixel).