i was trying to make a simple css drop down menu. I'm not able to achieve the drop down sub menu when you hover over a link. Below is my html and css rule, thanks.
ul#menu li
{
position:relative;
list-style-type:none;
float: left;
padding:0px;
width: 125px;
height: 25px;
}
ul#sub1 li
{
position:absolute;
left:0;
width:125px;
visibility: hidden;
}
ul#menu li:hover #sub1
{
visibility:visible;
}
<ul id="menu">
<li><a href="#">Hyperlink 1</a></li>
<li><a href="#">Hyperlink 2</a>
<ul id="sub1">
<li><a href="#">Hyperlink 2.1</a></li>
<li><a href="#">Hyperlink 2.2</a></li>
</ul>
</li>
<li><a href="#">Hyperlink 3</a></li>
<li><a href="#">Hyperlink 4</a></li>
</ul>