How can I make the user unable to select the second drop-down menu (time) without having selected the first drop-down menu (movie) first?
<html>
<body>
<h1>The select element</h1>
<p>The select element is used to create a drop-down list.</p>
<form action="/action_page.php">
<label for="Movie">Choose a movie:</label>
<select name="Movie" id="movie">
<option value="hulk">Hulk</option>
<option value="creed">Creed</option>
<option value="aviator ">Aviator</option>
</select>
<br><br>
<label for="Time">Choose a time:</label>
<select name="Time" id="time">
<option value="12:15">12:15pm</option>
<option value="8:00">8:00pm</option>
<option value="9:00” >9:00pm</option>
</select>
<input type="submit" value="Submit">
</form>
<p>Click the "Submit" button and the form-data will be sent to a page on the
server called "action_page.php".</p>
</body>
</html> ```