I am having trouble getting my drop-down menu to stay fixed at the top of the screen while scrolling down on my website. Despite several attempts, I have not been able to achieve this using the current CSS and menu setup. Can someone please assist me with this issue?
<style>
#cssmenu ul,
#cssmenu li,
#cssmenu span,
#cssmenu a {
margin: 0;
padding: 0;
position: relative;
}
#cssmenu: after, #cssmenu ul: after {
content: '';
display: block;
clear: both;
}
... (CSS code continues)
</style>
<div id='cssmenu'>
<ul>
<li class='Stream Portal'><a href="./home.html" >Home</a>
</li>
... (Menu items continue)
</ul>
</div>