<p> tag in <li> animation

HTML

<div id="about_nav">
  <p>
    hello
  </p>
</div>

CSS

#about_nav{
    float:left;
    display:block;
    margin-left:0px;
    overflow:hidden;
    padding-right:10px;
}
div {
  background-color: black;
  color: yellow;
}
#about_nav ul{
    list-style:none;
    padding:0;
}
#about_nav li{
    height:48px;
    width:130px;
    background: #613675; /* old browsers */

    background: -moz-linear-gradient(top, #613675 0%, #9145B5 50%, #613675 100%); /* firefox */

    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#613675), color-stop(50%,#9145B5), color-stop(100%,#613675)); /* webkit */

    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#613675', endColorstr='#613675',GradientType=0 ); /* ie */

    background: -o-linear-gradient(top, #613675 0%,#9145B5 50%,#613675 100%); /* opera */

    text-align:middle;
    margin-bottom:15px;
    -moz-border-radius-bottomright: 6px 4px;
    bottom-right-border-radius: 6px 4px;
    -webkit-border-bottom-right-radius: 6px 4px;
    -moz-border-radius-topright: 6px 4px;
    top-right-border-radius: 6px 4px;
    -webkit-border-top-right-radius: 6px 4px;
    -moz-box-shadow: 0px 3px 8px 3px #444;
    -webkit-box-shadow: 0px 3px 8px 3px #444;
    box-shadow: 0px 3px 8px 3px #444;
}
#about_nav li p{
    overflow: visible;
    padding-top:19px;
    padding-bottom:19px;
    text-align:right;
    margin-right:10px;
    vertical-align:middle;
    display: block;
}

JavaScript

var previous;

$('#anim li').click(function(){
    console.log(previous);
    if($(this)!=previous) { //checks if it was clicked last
        if(previous!=null) { //checks if the previous element exists
            previous.animate({
                overflow: 'visible', 
                width: 130
            }, 150);
        }
        
        $(this).animate({
            overflow: 'visible', 
            width: 163
        }, 150); //animates current
        
        previous = $(this); //assigns current to previous
        $('#about_content').children().hide(); //resets tabs window
        $('#tab_welcome').show(); //displays correct tab
    }
});