How to make nav bar stretch the full width of my page - html

Question

I want to make my navigation bar stretch the full width of my page, but it doesnt want to stretch everytime I use width 100% the navbar just break and lose its form. I'm not using any javascript and i think the problem is on the .horizontal-centering class CMIW
JSFiddle
I'm using pure css nav bar
/* dropdown.css */
ul.dropdown, ul.dropdown li, ul.dropdown ul {
list-style: none;
margin: 0;
padding: 0;
}
ul.dropdown {
position: relative;
z-index: 597;
float: left;
}
ul.dropdown li {
float: left;
min-height: 1px;
line-height: 1.3em;
vertical-align: middle;
}
ul.dropdown li.hover, ul.dropdown li:hover {
position: relative;
z-index: 599;
cursor: default;
}
ul.dropdown ul {
visibility: hidden;
position: absolute;
top: 100%;
left: 0;
z-index: 598;
width: 100%;
}
ul.dropdown ul li {
float: none;
}
ul.dropdown ul ul {
top: 1px;
left: 99%;
}
ul.dropdown li:hover > ul {
visibility: visible;
}
/* default.css */
ul.dropdown {
font: normal 16px"Square", Arial, Helvetica, sans-serif;
text-transform: uppercase;
}
ul.dropdown li {
padding: 7px 0;
background-color: #000;
color: #fff;
line-height: normal;
}
ul.dropdown a:link, ul.dropdown a:visited {
color: #fff;
text-decoration: none;
}
ul.dropdown a:hover {
color: #005CE6;
text-decoration: none;
}
ul.dropdown a:active {
color: #fff;
}
ul.dropdown ul {
width: 170px;
background-color: #333;
color: #fff;
font-size: 12px;
text-transform: none;
filter: alpha(opacity=90);
-moz-opacity: .9;
KhtmlOpacity: .9;
opacity: .9;
}
ul.dropdown ul li {
background-color: transparent;
color: #000;
filter: none;
}
ul.dropdown ul li.hover, ul.dropdown ul li:hover {
background-color: transparent;
}
ul.dropdown ul a:link, ul.dropdown ul a:visited {
color: #fff;
}
ul.dropdown ul a:hover {
color: #fff;
text-decoration: none;
}
ul.dropdown ul a:active {
color: #fff;
}
ul.dropdown *.dir {
padding-right: 12px;
background-image: none;
background-position: 100% 50%;
background-repeat: no-repeat;
}
/* default.advanced.css */
ul.dropdown li a {
display: block;
padding: 7px 14px;
}
ul.dropdown li {
padding: 0;
}
ul.dropdown li.dir {
padding: 7px 20px 7px 14px;
}
ul.dropdown ul li.dir {
padding-right: 15px;
}
ul.dropdown ul a {
padding: 4px 5px 4px 14px;
width: 151px;
}
ul.dropdown ul a:hover {
background-color: #005CE6;
}
ul.dropdown li:hover > a.dir {
background-color: #2e2e2e;
color: #005CE6;
}
ul.dropdown ul li:hover > a.dir {
background-color: #76b900;
color: #fff;
}
html { *overflow-x: hidden; }
body { padding: 0; }
body, html { height: 100%; padding: 0; margin: 0; }
.wrapper { min-height: 100%; min-width: 950px;overflow: hidden; }
.container { padding: 50px; }
.horizontal-centering { position: relative; }
.horizontal-centering > * > * { float: left; width: auto; position: relative; left: 50%; margin: 0; padding: 0; }
.horizontal-centering > * > * > * { float: left; position: relative; right: 50%; }

Answer 1

Instead of using overflow hidden to clear the floats by using a clearfix helper class this made the second level appear.
/* helper class for clearing floats */
.clearfix:after{
display: block;
visibility: hidden;
clear: both;
height: 0;
content:".";
}
.clearfix {
display: inline-block;
}
.clearfix{
display: block;
}
Reworked the dropdown and centering a little
.horizontal-centering {
background: #000000;
position: relative;
}
.horizontal-centering > div > div {
clear: both;
float: left;
width: 100%;
}
.dropdown-horizontal {
float: left;
width: auto;
position: relative;
left: 50%;
margin: 0;
padding: 0;
}
ul.dropdown > li > ul {
visibility: hidden;
position: absolute;
width: auto;
left: 0;
}
ul.dropdown > li:hover > ul {
visibility: visible;
}
ul.dropdown, ul.dropdown li, ul.dropdown ul {
list-style: none;
margin: 0;
padding: 0;
}
ul.dropdown {
float: left;
left: 50%;
list-style-type: none;
margin: 0 auto;
padding: 0;
position: relative;
}
ul.dropdown > li {
float: left;
position: relative;
right: 50%;
line-height: 1.3em;
}
ul.dropdown li.hover, ul.dropdown li:hover {
cursor: default;
}
ul.dropdown ul li {
float: none;
}
http://fiddle.jshell.net/35JPL/26/
http://fiddle.jshell.net/35JPL/26/show/

Answer 2

Check this fiddle based on yours: http://jsfiddle.net/u67qx/
I added width:100% to some classes and I deleted left:50%; and right:50%;. Looks like this is what you want. You can align text to center.