<!DOCTYPE html>
<html>
<body>
<h1>The datalist element</h1>
<form action="/action_page.php" method="get">
<label for="browser">Choose your browser from the list:</label>
<input list="browsers" name="browser" id="browser">
<datalist id="browsers">
<option value="Edge">
<option value="Firefox">
<option value="Chrome">
<option value="Opera">
<option value="Safari">
</datalist>
<input type="submit">
</form>
<p><strong>Note:</strong> The datalist tag is not supported in Safari 12.0 (or earlier).</p>
</body>
</html>
https://www.w3schools.com/tags/tag_datalist.asp