console 命令行工具 X clear
console
<!DOCTYPE html> 
<html>
    <head>
        <meta charset="utf-8">
        <title>Document</title>
        <link href="./css/plane.css">
</head>
<body>
    <div class"plane">
        <!--游戏开始界面-->
            <div class="start">
                <div class="begin">点击开始</div>
            </div>

        <!--游戏界面-->
            <div class="game"></div>

    </div>
</body>
</html>