To implement the dropdown menu functionality, you can use jQuery's slideToggle() method to smoothly show/hide the menu content when the dropdown button is clicked. This method animates the height of the matched elements.

$(document).ready(function() {
    $('#dropdownToggle').click(function() {
        $('#dropdownContent').slideToggle('fast');
    });
});

HTML:

<button id="dropdownToggle">Toggle Dropdown</button>
<div id="dropdownContent">
    <ul>
        <li>Item 1</li>
        <li>Item 2</li>
        <li>Item 3</li>
    </ul>
</div>

Edited