How can I put the flag icons of my website (www.eduardlid.net) at the same place, but with a different size (24 * 24) (now it´s 48 * 48)?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">

<HTML>

<head>
<meta http-equiv="content-type" content="text/ html; charset=UTF-8">
<title>Eduard Lid</title>
<link rel="stylesheet" type="text/css" href="ex1.css">


</head>

<body>

<div id="floater">

<ul id="flags">
 <li>american<span id="amer"></span></li>
 <li>spanish<span id="span"></span></li>
 <li>german<span id="germ"></span></li>
 <li>dutch<span id="dutc"></span><</li>

</ul>

</div><!--end #floater -->

<div id="vertical"></div>

<div id="main">

<img id="eduard" src="eduard.JPG" alt="img Eduard Lid">
<img id="lake" src="lake.jpg"  alt="lake">

<div id="content">

<p>Web design<span class="right">Dise&#241;ador de sitios web</span></p>
<p>Translator<span class="right">Traductor</span></p>

<h1>Eduard Lid</h1>

<ul id="links">
 <li><a href="spanish.html">m&#225;s</a></li>

</ul>

</div>

</div><!--end #main -->

<p id="copyright">Copyright &copy; 2012</p>


</body>
</HTML>


* {
    margin:0;
    padding:0;
    list-style-type:none;
 }
html,body{
    height:100%;
    background-color:#008;
 }
body {
    min-height:368px;       /*  total vertical height of the #main  */
    font:bold 18px verdana,arial,helvetica,sans-serif;
 }
#floater {
    position:absolute;
    z-index:1;
    width:100%;
    min-width:940px;
    top:0;
    left:0;
 }
#flags {
    float:right;
    width:252px;
    height:24px;
    margin:15px 9px;
 }

#flags li {
    position:relative;
    float:left;
    width:47px;
    margin:0 8px;
    font-size:50%;
    font-weight:normal;
}


#flags a,#flags span {
    position:relative;
    display:block;
    width:24px;
    line-height:0px;
    font-size:25%;
    font-weight:normal;
 }
#flags span {
    position:absolute;
    top:0;
    left:0;
    height:24px;
    background-position:0 -6px;
 }
#flags span:hover {
    box-shadow:#eef 0 0 16px;
 }
#amer {
    background-image:url(americanflag.gif);
 }
#span {
    background-image:url(spanishflag.gif);

 }
#germ {
    background-image:url(germanflag.gif);
 }
#dutc {
    background-image:url(dutchflag.gif);
 }
#vertical{
    float:left;
    width:100%;
    height:50%;
    margin-top:-184px;     /*  half the total vertical height of the #main  */
 }
#main {
    position:relative;
    min-width:940px;
    height:360px;
    border:4px solid #808080;
    clear:both;
    background-color:#fff;
 }
#eduard {
    float:left;
    border-right:4px solid #808080;
 }
#lake {
    float:right;
    border-left:4px solid #808080;
 }
#content {
    margin:0 270px;
    padding:0px;
    font-size:22px;
    font-family: Helvetica, Geneva, Arial,
          SunSans-Regular, sans-serif;
    color:#000000; 
 }
.right {
    float:right;
    width:260px;
    text-align:right;
 }
h1 {
    margin:155px 0 31px;
    font-size:250%;
    text-align:right;
    color:#708090; 
 }
#links {
    text-align:right;
    font-size: 12px;
 }
#links li {
    display:inline;
    margin:0 10px;
 }
#links a {
    color:#000;
 }
#links a:hover {
    color:#008;
 }
#copyright {
    position:absolute;
    width:98%;
    bottom:5px;
    left:0;
    font-size:50%;
    text-align:right;
    color:#FFFFFF;
 }

www.eduardlid.net

try to design them and then size them and use ids for each flag and change the width and height to what dimensions you want