<banner>
    <div id="img"><img src="images/banner3.jpg"></div>
    <div id="cover">banner遮罩层</div>
    <div class="update">
        <form>
            <input type="text" placeholder="your Name">
            <input type="text" placeholder="your Phone">
            <input type="email" placeholder="your E-mail">
            <textarea name="" id="" cols="30" rows="10" placeholder="your Comment"></textarea><br>
            <button type="submit">SEND MESSAGE</button>
        </form>
    </div>
</banner>

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