Building a fluid horizontal navigation - html

Question

I'm trying to build a horizontal navigation using %'s, and I cant seem to figure out whats going on. I have it all set up how I want it, but whenever I specify a size to the A or LI nothing changes, and therefore, I can only see a silver of my background image.
<div id=mainwrap>
<div id=header>
<div id = title>
<img src="images/hangaquilt.png" width="483" height="78" alt="Hang A Quilt">
</div>
<div id = cartstatus>
<p> Your Cart Is Empty </p>
</div>
<div id=nav>
<ul>
<li>Home</li>
<li>Products</li>
<li>Contact Us</li>
<li>View Cart</li>
<li>Dealers</li>
</ul>
</div>
</div>
<div id=bodycontent>
<div id=sidebar>
</div>
<div id=bodytext>
</div>
</div>
<div id=slideshow>
</div>
<div id=footer>
</div>
</div>
and the CSS
body {
background-color: rgb(238,225,185);
}
#mainwrap {
margin: 0 auto;
height: 700px;
width: 75%;
max-width:1024px;
min-width:800px;
}
#header {
margin: 0 auto;
margin-top: 3%;
width: 100%;
height: 25%;
}
#header img{
margin-left: 3.3%;
}
#title {
float:left;
width: 55%;
}
#cartstatus{
float: right;
width: 45%;
}
#cartstatus p{
margin-right: 7.1%;
float: right;
}
#nav{
clear: both;
width: 100%;
height: 33%;
font-family:"Rockwell Extra Bold",Trebuchet MS, Arial, Helvetica, sans-serif;
}
#nav ul {
height: 100%;
list-style-type: none;
text-align: center;
}
#nav li{
padding: 0;
width: 20%;
height: 100%;
font-size:18px;
display:inline;
}
#nav ul li a{
background-image: url(../images/navbg.png);
width: 19%;
height: 98%;
color: black;
text-decoration: none;
}
I've done navigation likes this before, and have never had this problem. It's really frustrating as I know it's something really simple that I'm missing.

Answer 1

If you define element as "inline", you can't change it's width or height.
Instead of
display:inline;
try
display:inline-block;
Here is what you want: http://jsfiddle.net/JmTKb/