Issue with side navigation bar - html

Question

I'm sure I've just made a silly error with this, but I can't seem to make it work it out.
My list items in my nav are not starting at the edge of my div, it's almost like there is a margin on the left.
HTML
<div class="container">
<div id="topline"> blah blah </div>
<div class="leftbox">
<img src="images/totalbulllogo.svg" alt="Total Bull Clothing Company Logo" />
</div>
<div id="banner">
<img src="images/totalbullbanner2.jpg" alt="Total Bull Clothing Company Logo" />
</div>
<div id="navmenu">
<ul>
<li class="active">HOME</li>
<li>ABOUT</li>
<li>STORE</li>
<li>SALE ITEMS</li>
<li>CONTACT</li>
</ul>
</div>
<div id="mainContent"> FEATURED ITEMS</div>
</div>
CSS
html, body {
margin:0;
padding:0;
font-family: Calibri, Arial, sans-serif;
}
#font-face {
font-family:'Neon 80s';
src:url('../fonts/neon.ttf'),
url('../fonts/neon.eot');
}
.container {
clear: both;
margin: 0 auto;
padding: 0;
width: 58%;
background-color: #FFFFFF;}
#topline { float:left;
text-align:right;
padding: 0;
width: 100%;
height: 5%;
background-color: #FFF;
margin-top:2%;
margin-bottom:2%;}
.leftbox {
float:left;
padding: 0;
width: 30%;
background-color: #5D2F92;}
.leftbox img {width: 96%;
margin-left: 3%
margin-right:1%;}
#banner img {width: 100%;}
#banner {float:left;
width:68%;
margin-left:2%;}
#navmenu {
float:left;
padding: 0;
width: 30%;
background-color: #5D2F92;
height: 100%;
margin-top:0.5%;
font-family:'Neon 80s';
font-size:18pt;
text-align:left;
}
#navmenu li {
list-style:none;
margin: 0;
}
#navmenu li a {text-decoration:none;
color:#FFFFFF;
margin: 0;
display:block;
padding:20px 0px;}
#navmenu li.active a {background-color:#C49A6C;}
#mainContent {float:left;
width:68%;
background-color:red;
text-align:center;
margin-top:0.5%;
margin-left:2%;}

Answer 1

You forgot to reset the browser ul default CSS values.
By default, depending on the browser, there are some attribute values assigned to some elements, in case of the ul has some margin and padding. So in order to fix this, you should reset these values as follows:
http://jsfiddle.net/gespinha/dW9wB/1/
#navmenu ul{
margin:0;
padding:0;
}