Links Moving Left on Hover - CSS - css

Question

When I hover on the links inside the menu they are moving some pixels to the right.
The image below shows whats is happening:
HTML:
<ul id="menu">
<li>4 columns<!-- Begin 4 columns Item -->
<div class="dropdown_4columns"><!-- Begin 4 columns container -->
<div class="col_4">
<h3>This is a heading title</h3>
</div>
<div class="col_1">
<ul>
<li>ThemeForest</li>
<li>GraphicRiver</li>
<li>ActiveDen</li>
<li>VideoHive</li>
<li>3DOcean</li>
</ul>
</div>
<div class="col_1">
<ul>
<li>NetTuts</li>
<li>VectorTuts</li>
<li>PsdTuts</li>
<li>PhotoTuts</li>
<li>ActiveTuts</li>
</ul>
</div>
<div class="col_1">
<ul>
<li>FreelanceSwitch</li>
<li>Creattica</li>
<li>WorkAwesome</li>
<li>Mac Apps</li>
<li>Web Apps</li>
</ul>
</div>
<div class="col_1">
<ul>
<li>Design</li>
<li>Logo</li>
<li>Flash</li>
<li>Illustration</li>
<li>More...</li>
</ul>
</div>
<div class="col_4">
<h2>This is a heading title</h2>
</div>
<div class="col_1">
<ul>
<li>ThemeForest</li>
<li>GraphicRiver</li>
<li>ActiveDen</li>
<li>VideoHive</li>
<li>3DOcean</li>
</ul>
</div>
<div class="col_1">
<ul>
<li>NetTuts</li>
<li>VectorTuts</li>
<li>PsdTuts</li>
<li>PhotoTuts</li>
<li>ActiveTuts</li>
</ul>
</div>
<div class="col_1">
<ul>
<li>FreelanceSwitch</li>
<li>Creattica</li>
<li>WorkAwesome</li>
<li>Mac Apps</li>
<li>Web Apps</li>
</ul>
</div>
<div class="col_1">
<ul>
<li>Design</li>
<li>Logo</li>
<li>Flash</li>
<li>Illustration</li>
<li>More...</li>
</ul>
</div>
</div><!-- End 4 columns container -->
</li><!-- End 4 columns Item -->
CSS:
/* Navigation Bar */
#menu {
list-style:none;
width:940px;
/* width:100%; */
margin:30px auto 0px auto;
height:43px;
padding:0px 20px 0px 20px;
/* Rounded Corners */
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
border-radius: 10px;
/* Background color and gradients */
background: #c92424;
background: -moz-linear-gradient(top, #dd4343, #9e1c1c);
background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#dd4343), to(#9e1c1c));
/* Borders
border: 1px solid #002232;
-moz-box-shadow:inset 0px 0px 1px #edf9ff;
-webkit-box-shadow:inset 0px 0px 1px #edf9ff;
box-shadow:inset 0px 0px 1px #edf9ff; */
}
#menu li {
float:left;
text-align:center;
position:relative;
padding: 4px 10px 4px 10px;
margin-right:20px;
margin-top:7px;
border:none;
}
#menu li:hover {
height:21px;
margin-top:1px;
text-align:center;
padding: 11px 9px 11px 9px;
/* Background color and gradients */
background: white;
/* background: -moz-linear-gradient(top, #e56e6e, #e56e6e);
background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#e56e6e), to(#e56e6e)); */
}
#menu li a {
font-family:Arial, Verdana, sans-serif;
font-weight: bold;
font-size:14px;
line-height:21px;
color: #EEEEEE;
display:block;
outline:0;
text-decoration:none;
text-shadow: 1px 1px 1px #000;
}
#menu li:hover a {
color:#161616;
text-shadow: 1px 1px 1px #FFFFFF;
}
#menu li .drop {
padding-right:21px;
}
/* Drop Down */
.dropdown_2columns,
.dropdown_4columns {
margin:11px auto;
float:left;
position:absolute;
left:-999em; /* Hides the drop down */
text-align:left;
padding:10px 5px 10px 5px;
border:1px solid #c92424;
border-top:none;
/* Gradient background
background:#F4F4F4;
background: -moz-linear-gradient(top, #EEEEEE, #BBBBBB);
background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#EEEEEE), to(#BBBBBB));
/* Rounded Corners */
-moz-border-radius: 0px 5px 5px 5px;
-webkit-border-radius: 0px 5px 5px 5px;
border-radius: 0px 5px 5px 5px;
}
.dropdown_2columns {width: 280px;}
.dropdown_4columns {width: 560px;}
#menu li:hover .dropdown_2columns,
#menu li:hover .dropdown_4columns{
left:-1px;
top:auto;
}
/* Columns */
.col_1,
.col_2,
.col_4{
display:inline;
float: left;
position: relative;
margin-left: 5px;
margin-right: 5px;
}
.col_1 {width:130px;}
.col_2 {width:270px;}
.col_4 {width:550px;}
/* Drop Down Content Stylings */
#menu p, #menu h2, #menu h3, #menu ul li {
font-family:Arial, Verdana, sans-serif;
font-weight: bold;
line-height:21px;
font-size:12px;
text-align:left;
text-shadow: 1px 1px 1px #FFFFFF;
}
#menu h2 {
font-size:21px;
font-weight:400;
letter-spacing:-1px;
margin:7px 0 14px 0;
padding-bottom:14px;
border-bottom:1px solid #666666;
}
#menu h3 {
font-size:14px;
margin:7px 0 14px 0;
padding-bottom:7px;
border-bottom:1px solid #888888;
}
#menu p {
line-height:18px;
margin:0 0 10px 0;
}
#menu li:hover div a {
font-size:12px;
color:#015b86;
}
#menu li:hover div a:hover {
color:#029feb;
}
#menu li ul {
list-style:none;
padding:0;
margin:0 0 12px 0;
}
#menu li ul li {
font-size:12px;
line-height:24px;
position:relative;
text-shadow: 1px 1px 1px #ffffff;
padding:0;
margin:0;
float:none;
text-align:left;
width:130px;
}
#menu li ul li:hover {
background:none;
border:none;
padding:0;
margin:0;
}
I tried to chance the padding and the margin at #menu li ul li:hover without any success. Does anyone have an idea of what is happening?

Answer 1

You have to remove the text-align:center; from #menu li:hover.
Here is the jsfiddle.

Answer 2

You probelm is text-align:center in #menu li:hover. A quick fix is to change it to the child selector instead of the descendatnt selector:
#menu>li:hover
Demo