2年前學到東西基本上是快忘記差不多了，最近在一點一點的把基礎東西撿回來，可否容易？堅持再堅持，想做好一件事，必須堅持，堅持每天複習，堅持把每天學到東西都記下來，我相信通過時間的慢慢積累，到後面是個突飛猛進的結果。
下面直接看代碼：
demo.html
<html>
<head>
<!--引入css檔案-->
<link rel="stylesheet" type="text/css" href="demo.css">
<title>css入門小案例</title>
</head>
<div class="style1">
<img src="2.jpg" />
</div>
</html>
demo.css檔案：
.style1{
/*css檔案是通過這樣定義注釋的*/
width:400px;
height:350px;/*特別要注意分號不能少，一定要寫一個分號，少了分號後面就有問題了*/
border:1px solid red;
background-color:silver;
margin-left:100px;
margin-top:50px;
padding-top:20px;
padding-left:30px;
}
運行：
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