无法为使用clear的页脚添加上边距:两者

Question

无法为使用clear的页脚添加上边距:两者

我无法为使用clear的页脚添加上边距:两者.使用填充似乎解决了这个问题.但它破坏了页脚的顶部实心边框.

index.php文件:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
    <title>Study at Best</title>
    <link rel="stylesheet" rev="stylesheet" href="styles/layout.css" />
    <link rel="stylesheet" rev="stylesheet" href="styles/ddm.css" />
    <script type="text/javascript" src="scripts/jquery-1.3.2.min.js"></script>
    <script type="text/javascript" src="scripts/jquery.corner.js"></script>
    <script type="text/javascript" src="scripts/jquery.js"></script>
</head>
<body>
<div id="container">
    <div id="logo">
        <img class="imageCenter" src="images/logo.png" alt="Best School"/>
    </div>
    <div id="navigation">
        <?php include("navigation.html"); ?>    
    </div>
    <div id="header">

    </div>
    <div id="left-column">
        <h2>left-column</h2>
        <p>
        erat, nec semper dui diam ut libero. Donec adipiscing placerat metus. 
        Integer eu eros vel risus ornare consequat. Curabitur sem erat, tempor 
        non, ullamcorper quis, dapibus a, ante. Aliquam tempus tellus eget est. 
        In hendrerit turpis sed ligula. Integer vulputate nibh congue magna.
        erat, nec semper dui diam ut libero. Donec adipiscing placerat metus. 
        Integer eu eros vel risus ornare consequat. Curabitur sem erat, tempor 
        non, ullamcorper quis, dapibus a, ante. Aliquam tempus tellus eget est.  
        </p>
    </div>
    <div id="main-column">
        <h2>main-column</h2>
        <p>
        erat, nec semper dui diam ut libero. Donec adipiscing placerat metus. 
        Integer eu eros vel risus ornare consequat. Curabitur sem erat, tempor 
        non, ullamcorper quis, dapibus a, ante. Aliquam tempus tellus eget est. 
        In hendrerit turpis sed ligula. Integer vulputate nibh congue magna.
        erat, nec semper dui diam ut libero. Donec adipiscing placerat metus. 
        Integer eu eros vel risus ornare consequat. Curabitur sem erat, tempor 
        non, ullamcorper quis, dapibus a, ante. Aliquam tempus tellus eget est. 
        In hendrerit turpis sed ligula. Integer vulputate nibh congue magna.
        erat, nec semper dui diam ut libero. Donec adipiscing placerat metus. 
        Integer eu eros vel risus ornare consequat. Curabitur sem erat, tempor 
        non, ullamcorper quis, dapibus a, ante. Aliquam tempus tellus eget est. 
        In hendrerit turpis sed ligula. Integer vulputate nibh congue magna.
        </p>
    </div>
    <div id="right-column">
        <h2>right-column</h2>
        <p>
        erat, nec semper dui diam ut libero. Donec adipiscing placerat metus. 
        Integer eu eros vel risus ornare consequat. Curabitur sem erat, tempor 
        non, ullamcorper quis, dapibus a, ante. Aliquam tempus tellus eget est. 
        In hendrerit turpis sed ligula. Integer vulputate nibh congue magna.
        erat, nec semper dui diam ut libero. Donec adipiscing placerat metus. 
        Integer eu eros vel risus ornare consequat. Curabitur sem erat, tempor 
        non, ullamcorper quis, dapibus a, ante. Aliquam tempus tellus eget est. 
        In hendrerit turpis sed ligula. Integer vulputate nibh congue magna.
        erat, nec semper dui diam ut libero. Donec adipiscing placerat metus. 
        Integer eu eros vel risus ornare consequat. Curabitur sem erat, tempor 
        non, ullamcorper quis, dapibus a, ante. Aliquam tempus tellus eget est. 
        In hendrerit turpis sed ligula. Integer vulputate nibh congue magna.
        </p>
    </div>
    <?php include("footer.html"); ?>
</div>
</body>
</html>

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footer.html:

<div id="footer">
<a href="#">Home |</a>
<a href="#">About Us |</a>
<a href="#">Contact Us |</a>
<a href="#">Menu Item 4 |</a>
<a href="#">Menu Item 5 |</a>
</div>

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style.css中:

/*Default*/
* { margin: 0px; padding: 0px; }
body { font-size: 75%; font-family: Arial, Helvetica, sans-serif; }
ul { list-style: none }
a { outline: none; }
a img { border: none; }
h1 { font-size: 3.0em; }
h2 { 
    font-style: normal;
    font-size: 1.0em; 
    padding: 5px 10px;
    margin-bottom: 10px;
    color: #FFF;
    background-color: #A53030;
}

/*Tools*/
.textCenter { text-align: center; }
.imageCenter { margin-left: auto; margin-right: auto; display: block; }
.floatLeft: { float: left; }
.floatRight: { float: right; }
.clear { clear: both; }

/*Page*/
#container {
    width: 800px;
    margin: 0px auto;
}

#logo {
    width: 170px;
    height: 60px;
    margin: 5px;
}

#header {
    width: 800px;
    height: 200px;
    background-image: url('../images/best.jpg');
}

#navigation {
    color: white;
    width: 800px;
    background-color: #000;
}

#left-column {
    width: 150px;
    padding: 10px;
    float: left; 
    color: #FFF;
    background-color: #A53030;
}

#main-column {
    width:360px;
    padding: 10px;
    float: left; 
}

#right-column {
    width: 200px;
    padding: 10px;
    float: right; 
}

#footer {
    margin-top: 50px;
    width: 800px;
    border-color: #262626;
    border-top-style: solid; 
    border-width: medium;
    clear: both;
}

#footer ul li {
    list-style: none;
    float: left;
}

#footer ul li a {
    display: block;
    padding: 5px;
    width: auto;
    color: #000;
    font-weight: bold;
    text-align: center;
    text-decoration: none
}

#footer ul li a:hover {
    color: #49A3FF;
}

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Answer 1

Emi*_*ily 2

您需要清除左列和右列的浮动。

添加overflow:hidden;到#container

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