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我需要侧栏不会超过页脚导航。我无法弄清楚如何编辑这个CSS。这是一个预览，使用html和css。所以我在寻找的是页脚边框的“碰撞”，因此边栏可以与它进行交互。 http://codepen.io/TheGamingHideout/pen/reayxCSS侧栏脚注检测
HTML：
<html>
<head>
<title>Home - POG</title>
<link rel="shortcut icon" href="http://www.thegaminghideout.com/pog/favicon.ico">
<link rel="stylesheet" type="text/css" href="style.css">
<!-- This Template is a WiP - Please report any bugs to the administrative team at The Gaming Hideout. Thank you. All rights reserved. -->
</head>
<body>
<div id="wrap">
<div id="header">
<h1><img src="http://www.thegaminghideout.com/pog/VexIMG/header.png" alt="Possessed Gaming" width="760" height="60"></h1>
</div>
<div id="navigation">
<div class="navlinks">
<div id="output2">
</div>
</div>
<script src="nav.js"></script>
</div>
<div id="buttons">
<img src="http://www.thegaminghideout.com/pog/VexIMG/donate.png">
</div>
<div id="body">
<center>
<h2>Welcome to Possessed Gaming DarkRP!</h2>
<h4>Owned by PossessedGaming</h4>
</center>
<p>Thanks for choosing our GMod server! You are currently playing DarkRP on PossessedGaming. Make sure to read and follow the rules below!</p>
<br>
<h3>Rules</h3>
<ul>
<li>Do NOT RDM</li>
<li>NLR 3 Minutes!</li>
<li>Respect Staff</li>
<li>Do NOT spam chat or mic</li>
<li>Have Fun!</li>
</ul>
<p>Disobeying these rules or finding loopholes around them can and will result in punishments including kicks, bans, mutes, weapon strips, and jails.</p>
<br>
<p>Click <a href="application.php">here</a> to apply for staff!</p>
<div id="latest">
<center>
<img src="http://www.thegaminghideout.com/pog/VexIMG/Index/latest.png">
<p id="output1"></p>
<script src="latest.js"></script></center>
</div>
</div>
<div id="footer">
<div id="copyright">
Copyright © The Gaming Hideout
<br>We own no rights on any game on this site unless otherwise noted.
<br>All Rights Reserved.
</div>
<div id="footnav">
<script src="footnav.js"></script>
</div>
</div>
</div>
</body>
</html>
CSS：
html, body {
margin: 0;
padding: 0;
}
.hidden {
display: none;
}
body {
background: url(http://www.thegaminghideout.com/pog/VexIMG/bg.png);
background-color: black;
background-size: 100%;
background-repeat: no-repeat;
font-size: 12px;
color: #666666;
}
@font-face {
font-family: 'karmatic_arcaderegular';
src: url('http://www.thegaminghideout.com/pog/fonts/ka1-webfont.eot');
src: url('http://www.thegaminghideout.com/pog/fonts/ka1-webfont.eot?#iefix') format('embedded-opentype'),
url('http://www.thegaminghideout.com/pog/fonts/ka1-webfont.woff2') format('woff2'),
url('http://www.thegaminghideout.com/pog/fonts/ka1-webfont.woff') format('woff'),
url('http://www.thegaminghideout.com/pog/fonts/ka1-webfont.ttf') format('truetype'),
url('http://www.thegaminghideout.com/pog/fonts/ka1-webfont.svg#karmatic_arcaderegular') format('svg');
font-weight: normal;
font-style: normal;
}
p, h1, h2, h3, h4, h5, h6, caption, text, font, li, ul {
color: white;
}
#wrap {
width: 760px;
margin: auto;
overflow: hidden;
}
#header {
height: 60px;
width: auto;
background: #db6d16
url(VexIMG/header.png);
}
#navigation {
width: 760px;
height: 35px;
position: absolute;
border-bottom: 2px solid #000000;
background: red;
padding: 0px;
}
#navigation .padding {
padding: 2px;
}
#navigation .navlinks {
position: absolute;
top: 1px; left: 0px;
}
#navigation .navlinks ul {
margin: 0px;
padding: 0px;
text-align: center;
list-style-type: none;
width: 760px;
height: 35px;
}
#navigation .navlinks li {
position: relative;
top: 5px;
margin: 0px 5px 0px 5px;
list-style-type: none;
display: inline;
}
#navigation .navlinks li a {
color: #000000;
padding: 5px 0px 9px 0px;
text-decoration: none;
font-size: 18px;
font-family: karmatic_arcaderegular;
padding: 5px 0px 9px 0px;
}
#navigation .navlinks li a:hover {
margin: 0px;
color: #ffffff;
background: red;
text-decoration: underline;
}
#buttons {
padding-bottom: 2000px;
margin-bottom: -2000px;
width: 155px;
border-left: 2px solid #FFA500;
border-right: 2px solid #FFA500;
float: right;
font-family: Terminal, Arial, Times New Roman;
background: linear-gradient(#700000, #250000);
}
#latest {
border: 1px ridge #FFA500;
width: 300px;
height: auto;
background: linear-gradient(#000000, #252525, #000000);
clear: left;
}
#latest p {
font-family: Times New Roman;
}
#body {
padding-top: 50px;
width: 600px;
font-family: Arial, Verdana, Terminal;
font-size: 14px;
}
#body .secret img {
width: 150px;
height: 100px;
border: 2px solid black;
}
#body .game {
padding: 3px 3px 10px 3px;
}
#body .game img {
align: center;
float: left;
width: 175px;
height: 101px;
border: 2px ridge #ff0000;
}
#body .game caption {
padding-left: 1px;
}
#body .space {
padding-top: 10px;
padding-bottom: 10px;
border-top: 4px ridge red;
border-bottom: 4px ridge red;
}
#body .game caption {
margin-top: 2px;
float: right;
font-family: Terminal, Arial, Verdana, San-Serif;
font-size: 12px;
color: #000000;
border-bottom: 2px dashed #e9e9e9;
}
#body .game a {
font-family: Terminal, Arial, San-Serif, Tahoma;
font-size: 10px;
color: #c9c9c9;
text-decoration: none;
}
#body .game a:hover {
font-family: Terminal, Arial, San-Serif, Tahoma;
font-size: 10px;
color: red;
text-decoration: underline;
}
#footer {
width: 730px;
height: 60px;
font-family: Tahoma, Arial, Terminal, San-Serif;
font-size: 10px;
color: #c9c9c9;
border-top: 1px solid #efefef;
padding: 13px 25px;
line-height: 18px;
}
#footer li {
padding: 0px 2px 0px 2px;
float: right;
display: inline;
text-align: left;
font-family: Terminal, Arial, San-Serif, Tahoma;
font-size:; 10px;
}
#footer a {
font-family: Terminal, Arial, San-Serif, Tahoma;
font-size: 10px;
color: #c9c9c9;
text-decoration: none;
}
#footer a:hover {
font-family: Terminal, Arial, San-Serif, Tahoma;
font-size: 10px;
color: red;
text-decoration: underline;
}
#footer #footnav {
display: inline;
width: 310px;
float: right;
text-align: left;
position: relative;
bottom: 65px;
}
只是一个提示，不要使用html元素'id'作为css选择器。这不仅仅是最坏的做法。 – lexith 2014-11-05 19:47:25
看看使用像Bootstrap的网格系统。它会让这个超级简单的布局成为可能。 http://getbootstrap.com/css/#grid – MattD 2014-11-05 20:08:36