我需要建立这个站点模型
这是我现在拥有的网站
当您向下滚动到页面底部时，您会看到布局的高度不合适（底部仍然有一条黑线）。
我尝试了一些调整，但 Layout 的高度仍然是错误的。
可以做些什么来修复它？
这是我的代码：
HTML：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>RW-Fliesen</title>
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<div id="wrapper">
<div id="header">
<a href="index.html" class="logo" title="Logo"></a>
<div class="contact-info" title="contact- info"></div>
<ul class="mn">
<li><a href=" " title="" class="mn1 "></a> </li>
<li><a href=" " title="" class="mn2 "></a> </li>
<li><a href=" " title="" class="mn3 "></a> </li>
<li><a href=" " title="" class="mn4 "></a></li>
<li><a href=" " title="" class="mn5 "></a></li>
<li><a href=" " title="" class="mn6 "></a></li>
</ul>
</div>
<div id="content">
<div id="top">
<div class="foto1" title="Fliesen"> <img src="foto1.png" alt="Fliesen1"/> </div>
<div class="foto2" title="Fliesen"> <img src="foto2.png" alt="Fliesen2"/> </div>
</div>
<div id="leftcolumn">
<div class="text" title="text">
<p> RW-Fliesen <br />
Ludwig-Thoma-Str. 36 <br />
82008 Unterhaching
</p>
<div class="text2" title="text">
<p> Telefon: <br />
Fax: <br />
Mobil: <br />
Email: <br />
</p>
</div>
<div class="text3" title="text">
<p> 089 - 358 557 88 <br />
089 - 358 557 89 <br />
0179 - 673 77 41 <br />
info@rw-fliesen.com <br />
</p>
</div>
<div class="text4" title="text">
<p> Betriebsnummer: 7084943 <br /> <span class="text-blue"> Eingetragen in die Handwerksrolle bei <br /> der Handwerkskammer für München <br /> und Oberbayern. </span> </p>
</div>
</div>
<div class="face" title="face">
<iframe id="f580fdad4" name="f83387924" scrolling="no" style="border: none; overflow: hidden; height: 690px; width: 262px;" class="fb_ltr" src="http://www.facebook.com/plugins/likebox.php?api_key=&locale=de_DE&sdk=joey&channel=http%3A%2F%2Fstatic.ak.facebook.com%2Fconnect%2Fxd_arbiter.php%3Fversion%3D18%23cb%3Dfe1e61258%26origin%3Dhttp%253A%252F%252Fwww.rw-fliesen.com%252Ff21318bbdc%26domain%3Dwww.rw-fliesen.com%26relation%3Dparent.parent&height=290&header=true&show_faces=true&stream=false&width=262&href=http%3A%2F%2Fwww.facebook.com%2Fpages%2FRW-Fliesen%2F115860578491339&colorscheme=light"></iframe>
</div>
</div>
<div id="rightcolumn">
<div class="text5" title="text">
<p> Wir sind Ihr fachlich kompetenter Fliesenleger- und Innenausbaubetrieb in Unterhaching. </p>
</div>
</div>
<div id="footer">
</div>
</div>
</div>
</body>
</html>
CSS：
@charset "utf-8";
/* CSS Document */
body { background: #1c1b17 url(bg.jpg) repeat-x; margin: 0; padding: 0; height: 1000px; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 13px;}
p { color: #17142B; line-height: 18px; padding: 0; font-size: 13px; font- weight: 600; }
h3 { color: #003d7a; font-size: 10px; font-weight: 600; margin-top: 0px; padding: 0px; }
h4 { color: #2f303f; font-size: 13px; font-weight: 600; margin-top: 20px; padding: 0px; }
.text-blue { color: #003d7a; line-height: 16px; padding: 0; font-size: 10px; font-weight: 600; }
#wrapper { width: 1000px; height: 800px; margin: 0 auto; }
#header { height: 400px; width: 1000px; display: block; position: relative; }
#header .logo { position: absolute; width: 374px; height: 221px; display: block; float: left; cursor: pointer; background: url(logo.png) 0 0 no-repeat transparent; top: 55px; left: 10px; }
#header .contact-info { position: absolute; width: 293px; height: 133px; display: block; float: left; cursor: pointer; background: url(contact-info.png) 0 0 no-repeat transparent; top: 100px; left: 700px; }
ul.mn { position: absolute; float: left; top: 316px; width: 978px; margin: 0; padding: 0; list-style-type: none; }
ul.mn li { float: left; }
ul.mn li a { display: block; float: left; height: 73px; }
ul.mn li a.mn1 { width: 104px; background-image: url('mn1.png'); background-position: 0 0; }
ul.mn li a.mn2 { width: 212px; background-image: url('mn2.png'); }
ul.mn li a.mn3 { width: 142px; background-image: url('mn3.png'); }
ul.mn li a.mn4 { width: 128px; background-image: url('mn4.png'); }
ul.mn li a.mn5 { width: 117px; background-image: url('mn5.png'); }
ul.mn li a.mn6 { width: 147px; background-image: url('mn6.png'); }
ul.mn li a.active, ul.mn li a:hover { background-position: 0 73px; }
#content { height: 1000px; width: 1000px; display: block; position: relative; }
#top { height: 300px; width: 1000px; display: block; position: relative; margin-bottom: 100px; }
#top .foto1 { width: 452px; height: 139px; float: left; margin-top: 30px; }
#top .foto2 { width: 253px; height: 138px; float: left; margin-top: 30px; margin-left: 100px; }
#leftcolumn { height: 800px; width: 300px; display: block; position: relative; float: left; }
#leftcolumn .text { height: 10px; width: 300px; display: block; position: relative; margin-bottom: 90px; }
#leftcolumn .text2 { height: 10px; width: 50px; display: inline-block; position: relative; }
#leftcolumn .text3 { height: 10px; width: 200px; display: inline-block; position: relative; padding-left: 30px; }
#leftcolumn .text4 { height: 10px; width: 300px; display: inline-block; position: relative; margin-top: 80px; }
#leftcolumn .face { height: 100px; width: 300px; display: block; position: relative; margin-top: 290px; }
#rightcolumn { height: 800px; width: 700px; display: inline-block; position: absolute; margin-left: 350px; margin-top: 0px; float: right; }
#rightcolumn .text5 { height: 300px; width: 700px; display: inline-block; position: relative; }
#footer