This is clever. Watch a video course CSS - The Complete Guide (incl. Example div. Only one form-associated element in a document can have this attribute specified. Get value of Radio button with onChange. It looks amazing seeing labels animating and changing their position to the top of the input and staying itself there when input is filled with some text. This is controlled by the resize CSS property — resizing is enabled by default, but you can explicitly disable it using a resize value of none: Valid and invalid values of a