Li,a Height stuck at 23 px

and when I change the height or add padding the text stays aligned at the bottom.

Any help?

HTML/PHP

<div id="topnav">
<div id="lefttopnav"></div>
<div id="topnavrepeat">
<ul>
<?php wp_list_pages('title_li='); ?>
</ul>); ?>

This tags are closed in future code.

CSS

#topnav {
	margin:0px;
	padding:0px;
	width:946px;
	height:88px;
}
#topnavrepeat {
	height:88px;
	background:url(images/topnavRepeat.jpg);
	background-repeat:repeat-x;
	width:876px;
	float:left;
}
#topnavrepeat ul {
	float:right;
	width:500px;
	padding-top:49px;
}
#topnavrepeat li {
	display:inline;
	list-style-image:none;
}
#topnavrepeat a {
	color:#000;
	padding-left:25px;
	padding-right:25px;
	margin-top:53px;
	text-decoration:none;
}
#topnavrepeat a:hover {
	background-color:#00b8ff;
	background:url(images/linkbg.jpg);
	background-repeat:repeat-x;
	color:#fff;
}

I do not know what is wrong

Any help on this one? Thnx.