Icons help to highlight a text block or quotation to show that the text is about a restaurant, shop, airport, etc. When selecting icons for a new style, try to add those that match the palette for the background, text, dividers and links.
Click the Add an icon on the toolbar on the right and in the opened window select one of the tabs. In addition to the pre-made icons and icons added by you, you can insert special characters and emojis when creating a style.
Inline icons are scaled automatically according to the line height. On the image below an icon has the same size as large header.
Learn how to upload and save custom icons for your post style in this article.