<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Form Validation with Tooltips</h2>
<p>Use <code>.valid-tooltip</code> or <code>.invalid-tooltip</code> to tell the user explicitly what's missing, or what needs to be done before submitting the form. Note that the parent needs position:relative to work.</p>
<form action="https://www.w3schools.com/action_page.php" class="was-validated">
<div class="form-group" style="position:relative">
<label for="uname">Username:</label>
<input type="text" class="form-control" id="uname" placeholder="Enter username" name="uname" required>
<div class="invalid-tooltip">Please fill out this field.</div>
</div>
<div class="form-group mt-5" style="position:relative">
<label for="pwd">Password:</label>
<input type="password" class="form-control" id="pwd" placeholder="Enter password" name="pswd" required>
<div class="valid-tooltip">Valid.</div>
<div class="invalid-tooltip">Please fill out this field.</div>