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一般的正规css代码写法

    body {
    font-family: Arial, Helvetica, sans-serif;
    font-size:12px;
    color:#666666;
    background:#fff;
    text-align:center;

    }

    * {
    margin:0;
    padding:0;
    }

    a {
    color:#1E7ACE;
    text-decoration:none;
    }

    a:hover {
    color:#000;
    text-decoration:underline;
    }
    h3 {
    font-size:14px;
    font-weight:bold;
    }

    pre,p {
    color:#1E7ACE;
    margin:4px;
    }
    input, select,textarea {
    padding:1px;
    margin:2px;
    font-size:11px;
    }
    .buttom{
    padding:1px 10px;
    font-size:12px;
    border:1px #1E7ACE solid;
    background:#D0F0FF;
    }
    #formwrapper {
    width:450px;
    margin:15px auto;
    padding:20px;
    text-align:left;
    border:1px #1E7ACE solid;
    }

    fieldset {
    padding:10px;
    margin-top:5px;
    border:1px solid #1E7ACE;
    background:#fff;
    }

    fieldset legend {
    color:#1E7ACE;
    font-weight:bold;
    padding:3px 20px 3px 20px;
    border:1px solid #1E7ACE;
    background:#fff;
    }

    fieldset label {
    float:left;
    width:120px;
    text-align:right;
    padding:4px;
    margin:1px;
    }

    fieldset div {
    clear:left;
    margin-bottom:2px;
    }

    .enter{ text-align:center;}
    .clear {
    clear:both;
    }

    -->
    </style>
    </head>

    <body>
    <div id="formwrapper">