CSS的Pseudo Classes 伪类

a.snowman:link {
color: blue;
}
a.snowman:visited {
color: purple;
}
a.snowman:active {
color: red;
}
a.snowman:hover {
text-decoration: none;
color: blue;
background-color: yellow;
}

可以用来定义不同颜色的链接。

CSS的Background Images 背景图片

body {
background: white url(http://www.htmldog.com/images/bg.gif) no-repeat top right;
}