CSS: Responsive CSS gorizontal menu

CSS: Responsive CSS gorizontal menu

/*======================================================
=            Responsive CSS gorizontal menu            =
======================================================*/
/**
*
* http://webdesignerwall.com/tutorials/css-responsive-navigation-menu
* Internet Explorer Support
* <!--[if lt IE 9]>
    <script src="http://css3-mediaqueries-js.googlecode.com/files/css3-mediaqueries.js"></script>
    <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
  <![endif]-->

* HTML Markup
* <nav class="nav">
    <ul>
        <li class="current"><a href="#">Portfolio</a></li>
        <li><a href="#">Illustration</a></li>
        <li><a href="#">Web Design</a></li>
        <li><a href="#">Print Media</a></li>
        <li><a href="#">Graphic Design</a></li>
    </ul>
  </nav>
**/

/* nav */
.nav {
    margin: 20px 0;
}
.nav ul {
    margin: 0;
    padding: 0;
}
.nav li {
    margin: 0 5px 10px 0;
    padding: 0;
    list-style: none;
    display: inline-block;
}
.nav a {
    padding: 3px 12px;
    text-decoration: none;
    color: #999;
    line-height: 100%;
}
.nav a:hover {
    color: #000;
}
.nav .current a {
    background: #999;
    color: #fff;
    border-radius: 5px;
}
/*Center and Right Alignment
you can change the alignment of the buttons by using text-align property.*/
/* right nav */
/*.nav.right ul {
    text-align: right;
}
*/
/* center nav */
/*.nav.center ul {
    text-align: center;
}
*/
/*Responsive
On 600px breakpoint, I set the nav element to relative position so I can place the 
<ul> menu list on top with absolute position. I hide all <li> elements by specifying 
display:none, but keep the .current <li> displaying as block. Then on the nav hover, 
I set all <li> back to display:block (this will produce the dropdown list result). 
I added a check icon graphic on the .current element to indicate it is the active item. 
For the center and right alignment menu, use left and right property to position the <ul> list. */
@media screen and (max-width: 600px) {
    .nav {
        position: relative;
        min-height: 40px;
    }   
    .nav ul {
        width: 180px;
        padding: 5px 0;
        position: absolute;
        top: 0;
        left: 0;
        border: solid 1px #aaa;
        background: #fff url(data:image/png;base64,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) no-repeat 10px 11px;
        border-radius: 5px;
        box-shadow: 0 1px 2px rgba(0,0,0,.3);
    }
    .nav li {
        display: none; /* hide all <li> items */
        margin: 0;
    }
    .nav .current {
        display: block; /* show only current <li> item */
    }
    .nav a {
        display: block;
        padding: 5px 5px 5px 32px;
        text-align: left;
    }
    .nav .current a {
        background: none;
        color: #666;
    }

    /* on nav hover */
    .nav ul:hover {
        background-image: none;
    }
    .nav ul:hover li {
        display: block;
        margin: 0 0 5px;
    }
    .nav ul:hover .current {
        background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAALCAYAAABLcGxfAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyJpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuMC1jMDYwIDYxLjEzNDc3NywgMjAxMC8wMi8xMi0xNzozMjowMCAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvIiB4bWxuczp4bXBNTT0iaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wL21tLyIgeG1sbnM6c3RSZWY9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9zVHlwZS9SZXNvdXJjZVJlZiMiIHhtcDpDcmVhdG9yVG9vbD0iQWRvYmUgUGhvdG9zaG9wIENTNSBNYWNpbnRvc2giIHhtcE1NOkluc3RhbmNlSUQ9InhtcC5paWQ6RjIyQkFFNkI1Q0Y3MTFFMkI1NEFBNkJFQ0MyNkQ2RkYiIHhtcE1NOkRvY3VtZW50SUQ9InhtcC5kaWQ6RjIyQkFFNkM1Q0Y3MTFFMkI1NEFBNkJFQ0MyNkQ2RkYiPiA8eG1wTU06RGVyaXZlZEZyb20gc3RSZWY6aW5zdGFuY2VJRD0ieG1wLmlpZDpGMjJCQUU2OTVDRjcxMUUyQjU0QUE2QkVDQzI2RDZGRiIgc3RSZWY6ZG9jdW1lbnRJRD0ieG1wLmRpZDpGMjJCQUU2QTVDRjcxMUUyQjU0QUE2QkVDQzI2RDZGRiIvPiA8L3JkZjpEZXNjcmlwdGlvbj4gPC9yZGY6UkRGPiA8L3g6eG1wbWV0YT4gPD94cGFja2V0IGVuZD0iciI/PqD6KfQAAACZSURBVHjaYmYgDrABsSoQf2UhQjE3ECtD2f+YCSgWRFJ8C4h/4rNBDIhlQaYC8W0g/gESBNkgBVXwC0ozQhWCxP8D8X0g/gwzBaRBHojFgZgViL8BsRIQC0HlnwLxW2RrGaHuVMLipDdA/BBdkBnqNhDNgyT+FYjvYfMYLJQ+QzWwA/FvaIj8JRTeID/oQsOdaMBESAFAgAEAuJsXuNqs7O4AAAAASUVORK5CYII=) no-repeat 10px 7px;
    }

    /* right nav */
   /* .nav.right ul {
        left: auto;
        right: 0;
    }*/

    /* center nav */
   /* .nav.center ul {
        left: 50%;
        margin-left: -90px;
    }*/
    
}
/*-----  End of Responsive CSS gorizontal menu  ------*/