Provide valuable, actionable feedback to your users with HTML5 form validation–[available in all our supported browsers](http://caniuse.com/#feat=form-validation). Choose from the browser default validation feedback, or implement custom messages with our built-in classes and starter JavaScript.
{% callout warning %}
-We **highly recommend** custom validation styles as native browser defaults are not announced to screenreaders.
+We **highly recommend** custom validation styles as native browser defaults are not announced to screen readers.
{% endcallout %}
### How it works