我有以下的CSS代碼。出於某種原因,背景色不起作用。有人可以幫忙嗎?背景色不工作CSS中的類
<!DOCTYPE HTML>
<!--Inform the Browser that the document is HTML-->
<html lang="en-US">
<head>
<meta charset="UTF-8">
<head>
<style type="text/css">
.leftpane{
width: 20%;
height: 80%;
border-color: brown;
border-width: .25em;
border-style: double;
float: left;
margin-right: 1em
background-color: orange;
}
</style>
<title>Trying CSS </title>
</head>
<body>
<div class="leftpane">
hi hi hi
<br/>
</div>
</body>
</html>
美妙的接吻! – TimeToCodeTheRoad