我必须在学校做一个使用 HTML 和 CSS 的元素，到目前为止我所做的只是页面布局，无论出于何种原因，当我为我的网页放置页脚时，它会弹出在页面顶部而不是底部，我在尝试调整它的大小以修复整个页面时也遇到了一些麻烦。
#wrapper {
width: 1024px;
height: 768px;
background-color: #E1E0E0;
}
#banner {
width: 1024px;
height: 220px;
background-color: #6E6A6A;
}
#menuTop {
width: 1024px;
height: 35px;
background-color: #ACAAAA;
}
#columnLeft {
width: 220px;
height: 438px;
background-color: #CBCACA;
float: left;
}
#columnRight {
width: 220px;
height: 438px;
background-color: #CBCACA;
float: right;
}
#content {
width: 584;
height: 438;
background-color: #E1E0E0;
margin-left: 220px;
}
#footer {
width: 1024px;
height: 75px;
background-color: #6E6A6A;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="FinalHTML.css">
<title></title>
</head>
<body>
<div id="wrapper">
<div id="banner">
</div>
<div id="menuTop">
</div>
<div id="columnLeft">
</div>
<div id="columnRight">
</div>
<div id="content">
</div>
<div id="footer">
</div>
</div>
</body>
</html>最佳答案
height和width必须有单位，如px、dpi等。
#wrapper {
width: 1024px;
height: 768px;
background-color: #E1E0E0;
}
#banner {
width: 1024px;
height: 220px;
background-color: #6E6A6A;
}
#menuTop {
width: 1024px;
height: 35px;
background-color: #ACAAAA;
}
#columnLeft {
width: 220px;
height: 438px;
background-color: #CBCACA;
float: left;
}
#columnRight {
width: 220px;
height: 438px;
background-color: #CBCACA;
float: right;
}
#content {
width: 584px; // here you frogot the unit (px in this case)
height: 438px;
background-color: #E1E0E0;
margin-left: 220px;
}
#footer {
width: 1024px;
height: 75px;
background-color: #6E6A6A;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="FinalHTML.css">
<title></title>
</head>
<body>
<div id="wrapper">
<div id="banner">
</div>
<div id="menuTop">
</div>
<div id="columnLeft">
</div>
<div id="columnRight">
</div>
<div id="content">
</div>
<div id="footer">
</div>
</div>
</body>
</html>关于css - HTML 和 CSS 学校元素，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26813242/