css的鏈接美化

    a:link {
    color: #000; text-decoration: none //鏈接
    }
    a:visited {
    color: #000; text-decoration: none //已訪問過
    }
    a:active {
    color: green; text-decoration: none //活動(dòng)
    }
    a:hover {
    color: red; text-decoration: underline //鼠標(biāo)經(jīng)過
    }