CSS規則由兩個主要的部分構成: 選取器,以及一條或者多條聲明.
selector {declaration1; declaration2; ... declarationN }
選取器通常是你需要改變樣式的HTML元素.
每條聲明由一個屬性和一個值組成.
屬性(property)是你希望設定的樣式屬性(style attribute).每個屬性有一個值,屬性和值被冒號分開.
selector {property: value}
下面這行代碼的作用是將 h1 元素內的文字顏色定義為紅色,同時將字型大小設定為 14 像素.
h1 {color:red; font-size:14px;}
內部樣式表:
當單個文檔需要特殊的樣式時,就應該使用內部樣式表.你可以使用<style>標籤在文檔頭定義內部樣式表.
例子:
webpage.html
<html>
<head>
<style type="text/css">
body {background-color: yellow}
</style>
</head>
<body>
</body>
</html>
效果:
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
