For custom form validation messages, you’ll need to add the novalidate boolean attribute to your
<form>. This disables the browser default feedback tooltips, but still provides access to the form
When attempting to submit, you’ll see the
:valid styles applied to your form controls.
see a slightly different style of feedback.
We recommend using client side validation, but in case you require server side, you can indicate invalid and valid form fields with
.is-valid. Note that
is also supported with these classes.