Am in the process of transferring my website into wordpress.

I have gotten this far


The drop down menu is not being activated.

My guess is that I haven't put the code in to call it.

My research tells me that
<style type="text/css" media="screen">@import url(<?php bloginfo('stylesheet_url'); ?>);</style>
Is the code am looking for..

What do i change in this to make it call my dropdown menu.

Sorry if the question sounds dumb, am very new to php.. hours in fact!