JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box"><span><span></div>
<div>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus</p>
</div>

<ul id="navigation">
            <li><a href="" title="News"><p class="nav_text">News</p></a></li>
            <li><a href="" title="Kontakt"><p class="nav_text">Kontakt</p></a></li>
            <li><a href="" title="Newsletter"><p class="nav_text">Newsletter</p></a></li>
</ul>

CSS

ul#navigation {
    position: relative;
    margin: 0px;
    padding: 0px;
    top: 120px;
	right: 0px;
    list-style: none;
    z-index:9999;
}
ul#navigation li {
    width: 100px;
	margin-bottom: 5px;
}
ul#navigation li  a{
    display: block;
    margin-right: -2px;
    width: 160px;
    height: 40px; 
	text-decoration: none;
	text-align: right;
    background-color:#CFCFCF;
    border:1px solid #AFAFAF;
    -moz-border-radius:0px 10px 10px 0px;
    -webkit-border-bottom-left-radius: 10px;
    -webkit-border-top-left-radius: 10px;
    -khtml-border-bottom-left-radius: 10px;
    -khtml-border-top-left-radius: 10px;
	border-top-left-radius: 10px;
	border-bottom-left-radius: 10px;
	behavior:url(border-radius.htc);
    opacity: 0.8;
    filter:progid:DXImageTransform.Microsoft.Alpha(opacity=80);
}
p.nav_text {
	font-family: Arial;
	font-size: 12px;
    margin: 12px 20px 0 0;
	cursor: pointer;
}

.box {
    border-style: solid;
    border-width: 1px;
    width: 30px;
    height: 30px;
    background-color: #C00808;
    position: absolute;
    -moz-transition:width 0.5s;
    -webkit-transition:width 0.5s;
    -o-transition:width 0.5s;
    transition:width 0.5s;
}
.box:hover {
    width:150px;
}

JavaScript

$(function() {
                $('#navigation a').stop().animate({'marginLeft':'900px'},0);

                $('#navigation > li').hover(
                    function () {
                        $('a',$(this)).stop().animate({'marginLeft':'800px'},200);
                    },
                    function () {
                        $('a',$(this)).stop().animate({'marginLeft':'900px'},200);
                    }
                );
});