<!DOCTYPE html>
<html>
<body>
<h1>The input pattern attribute</h1>
<p>A form with an email field that that must be in the following order:
[email protected] (characters followed by an @ sign, followed by more characters, and then a ".". After the "." sign, add at least 2 letters from a to z:</p>
<form action="/action_page.php">
<label for="email">Email:</label>
<input type="email" id="email" name="email" pattern="[a-z0-9._%+\-]+@[a-z0-9.\-]+\.[a-z]{2,}$">
<input type="submit">
</form>
</body>
</html>