Responsive Navigation Menu with collapsing Menu bar - html

Question

I developed a navigation menu which is responsive. How can I make the menu that when it is on a screen resolution max 480px not stacked under each other but gets hidden and shown like the below:
HTML Code:
<div id='cssmenu'>
<div class="logo">
<img src="http://img1.wikia.nocookie.net/__cb20100606210319/grooveshark/images/c/c2/Logo_Horizontal.jpg" alt="logo" />
</div>
<ul>
<li class='active'><a href='index.html'>Home</a></li>
<li class='has-sub '><a href='#'>Products</a>
<ul>
<li class='has-sub '><a href='#'>Product 1</a>
<ul>
<li><a href='#'>Sub Item</a></li>
<li><a href='#'>Sub Item</a></li>
</ul>
</li>
<li class='has-sub '><a href='#'>Product 2</a>
<ul>
<li><a href='#'>Sub Item</a></li>
<li><a href='#'>Sub Item</a></li>
</ul>
</li>
</ul>
</li>
<li><a href='#'>About</a></li>
<li><a href='#'>Contact</a></li>
</ul>
</div>
CSS:
/*Main Menu CSS*/
#import url(http://fonts.googleapis.com/css?family=Oxygen+Mono);
#cssmenu {padding: 0; margin: 0; border: 0;}
#cssmenu ul, #cssmenu li {list-style: none; margin: 0; padding: 0;}
#cssmenu ul {position: relative; z-index: 597; }
#cssmenu ul li { float: left; min-height: 1px; vertical-align: middle;}
#cssmenu ul li.hover,
#cssmenu ul li:hover {position: relative; z-index: 599; cursor: default;}
#cssmenu ul ul {visibility: hidden; position: absolute; top: 100%; left: 0; z-index: 598;}
#cssmenu ul ul li {float: none;}
#cssmenu ul ul ul {top: 0; left: auto; right: -99.5%; }
#cssmenu ul li:hover > ul { visibility: visible;}
#cssmenu ul ul {bottom: 0; left: 0;}
#cssmenu ul ul {margin-top: 0; }
#cssmenu ul ul li {font-weight: normal;}
#cssmenu a { display: block; line-height: 1em; text-decoration: none; }
#cssmenu {
background: #333;
border-bottom: 4px solid #1b9bff;
font-family: 'Oxygen Mono', Tahoma, Arial, sans-serif;
font-size: 16px;
}
#cssmenu > ul { *display: inline-block; }
#cssmenu:after, #cssmenu ul:after {
content: '';
display: block;
clear: both;
}
#cssmenu a {
background: #333;
color: #CBCBCB;
padding: 0 20px;
}
#cssmenu ul { text-transform: uppercase; }
#cssmenu ul ul {
border-top: 4px solid #1b9bff;
text-transform: none;
min-width: 190px;
}
#cssmenu ul ul a {
background: #1b9bff;
color: #FFF;
border: 1px solid #0082e7;
border-top: 0 none;
line-height: 150%;
padding: 16px 20px;
}
#cssmenu ul ul ul { border-top: 0 none; }
#cssmenu ul ul li { position: relative }
#cssmenu > ul > li > a { line-height: 80px; }
#cssmenu ul ul li:first-child > a { border-top: 1px solid #0082e7; }
#cssmenu ul ul li:hover > a { background: #35a6ff; }
#cssmenu ul ul li:last-child > a {
border-radius: 0 0 3px 3px;
box-shadow: 0 1px 0 #1b9bff;
}
#cssmenu ul ul li:last-child:hover > a { border-radius: 0 0 0 3px; }
#cssmenu ul ul li.has-sub > a:after {
content: '+';
position: absolute;
top: 50%;
right: 15px;
margin-top: -8px;
}
#cssmenu ul li:hover > a, #cssmenu ul li.active > a {
background: #1b9bff;
color: #FFF;
}
#cssmenu ul li.has-sub > a:after {
content: '+';
margin-left: 5px;
}
#cssmenu ul li.last ul {
left: auto;
right: 0;
}
#cssmenu ul li.last ul ul {
left: auto;
right: 99.5%;
}
.logo{
margin-top:0px;
float:left;
margin-left:20%;
padding-right:10px;
}
.logo img{
width:200px;
height:66px;
}
#Media screen and (max-width:480px) {
#cssmenu ul li { display: block ; width: 100% ; text-align:center; }
#cssmenu > ul > li > a { line-height: 60px; }
.content1{font-size:100%;}
}
}
#Media screen and (max-width:768px) {
.logo{ margin-left:10%;}
}
Here you can also find a fiddle of this: http://jsfiddle.net/uA4fL/

Answer 1

I basically made ​​changes in the average query 480px,
see this jsfiddle: http://jsfiddle.net/uA4fL/6/
if not what you expect. regards
#Media screen and (max-width:480px) {
#cssmenu *:not{ float :left !important; width: 100%;padding-left: 0px !important; padding-right: 0px !important;}
.logo{margin:0;padding:0}
#cssmenu .logo > a{margin:0;padding:0}
#cssmenu ul li { display: block ; width: 100% ; text-align:center; }
#cssmenu > ul > li > a { line-height: 60px; }
#cssmenu ul ul {
border-top: 4px solid #1b9bff;
text-transform: none;
width: 100%;
/* float: left; */
}
#cssmenu ul ul ul {display:none;}
#cssmenu .has-sub:hover > ul {
border-top: 0 none;
visibility:visible;
display: block;
float: left;
clear: both;
position:relative;
right: 0;
}
#cssmenu ul li.hover, #cssmenu ul li:hover{
display:inline-block;
}
.content1{font-size:100%;}
}