Input Validation Shake Animation Tutorial (HTML & CSS )
Build an intelligent, pure-CSS form validation error shake animation using ONLY HTML and CSS!
In this step-by-step real-time coding tutorial, we build a dark minimalist data input component entirely from scratch. We write out every layout parameter, absolute animation frame displacement, and regex state constraint live on screen so you can follow along seamlessly.
You'll master the elite technique of combining three native CSS pseudo-classes (:invalid, :not(:placeholder-shown), and :not(:focus)) to forge an automated browser state engine. This smart pipeline waits for the user to finish typing and click away before executing validation checks, bypassing complex JavaScript input listeners. You'll also learn how to map a diminishing horizontal coordinate timeline using @keyframes and translateX properties to synthesize a highly premium, natural physical spring dampening vibration effect.
Source Code: https://github.com/AbduRazaq-23/HTML_...
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