Whenever you add a style to an element, like changing the font size for example, Webflow highlights that style in blue. If you want to very quickly remove that style and reset it, just hold down Option/Alt and click on that style! BOOM it's gone!

I'm always down for time saver shortcuts. One of my absolute favourite ones is adjusting margin or padding on all sides at once, no need to change each one individually. Simpye hold down Shift/Alt, click on of the margin or padding values and drag. You're welcome ¯\_(ツ)_/¯