align div's to bottom with margin applied - html

Question

how can we align all the list items to the bottom of the parent separated by a margin.
If I apply position: absolute; bottom: 0, all elements align to the bottom but margins are discarded.
#bars0 {
width: 472px;
height: 258px;
position: relative;
}
#bars0 li {
border: solid red 1px;
width: 30px;
height: 50px;
margin-right: 95px;
position: absolute;
bottom: 0
}
<div id="bars0">
<ul><!-- update: added ul -->
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>

Answer 1

Any reason why you can't surround the <li> with a <ul> tag and absolutely position the <ul>? That way you could control the margin of internal <li>??
The HTML:
<div id="bars0">
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>
The CSS:
#bars0 {
width: 472px;
height: 258px;
position: relative;
}
#bars0 ul {
position: absolute;
bottom: 0;
}
#bars0 li {
border: solid red 1px;
width: 30px;
height: 50px;
margin-right: 95px;
vertical-align: bottom;
display: block;
float: left;
}
#bars0 li:last-child {
margin-right: 0;
}
Thusly: http://jsfiddle.net/RYBFF/1/
To address your recent request on the comments: Just remove the margin from the last item in the list using :last-child on the <li> as shown above.

Answer 2

I think you're trying to do something like this:
<style type="text/css">
#container {
position: relative;
height:200px;
border:1px solid red;
}
#bars{
position:absolute;
bottom: 5px;
}
#bars ul li {
float: left;
min-width:100px;
}
</style>
<div id="container">
<div id="bars">
<ul>
<li>Test</li>
<li>Test 2</li>
</ul>
</div>
</div>
Here's a jsFiddle to demonstrate: http://jsfiddle.net/YYCZc/2/