不知為何我程式碼浮動不起作用
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>3.兩列佈局右邊固定左邊自適應</title>
<style type="text/css">
#.main {
height:600px;
background-color:skyblue;
margin-right:200px;
}
#.right {
width:200px;
height:600px;
background-color:lightgreen;
float:right; /*設定區塊元素的右浮動* /
}
</style>
</head>
<body>
<div>主體</div>
<div>右側</div>
</body>
</html>
