Dropdown menu without javascript

Question

I have a menu with tabs, and on hover of a tab a list of things appear at the bottom of the tab. Then, I wanted to do that the list of thing go down with a transition( before it was display:block). My problem is that when the transition will start, the top of the list must be a certain multiplication ( the width of a tab * the number of tabs ). But I don't want any javascript.

Is there a way to do that ?

Solution

it is my sample of css dropdown menu: i hope be useful:

in HTML, and CSS:

#menu, #menu ul
{
	list-style: none;
	border: 1px solid #000;
	background-color: #ecffec;
	padding: 0 0 26px 0;
	margin: 0;
}
#menu li
{
	float: left;
	margin-right: 3px;
	border: 1px solid #ecffec;
	position: relative;
}
#menu ul
{
	position: absolute;
	top: 25px;
	left: -1px;
	width: 200px;
	padding: 0;
	display: none;
}
#menu ul li
{
	float: none;
	margin: 0;
	padding: 0;
	line-height: 15px;
}
#menu a:link, #menu a:visited
{
	display: block;
	font-family: Tahoma;
	font-size: 0.75em;
	font-weight: bold;
	text-align: left;
	text-decoration: none;
	color: #000;
	padding: 5px;
}
#menu li:hover
{
	background-color: #ffd98a;
	border: 1px solid #000;
}
#menu li:hover ul
{
	display: block;
}

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