Warnings are not ERRORS.
Think of them as "kindly Old Mother Validator" asking you if you remembered to brush your teeth, wash behind your ears, and... as you head out the door, remembered to bring your rubbers. (What?--It looks like rain! Sheesh! What were YOU thinking?)
"Warnings" are just that... kindly, but at times stern sounding, even a bit annoying, reminders to be sure you know what you are doing, and why you are doing it.
Use the shorthand property.