<table class="table table-striped table-bordered table-hover">
        <thead>
            <tr>
                <td>#</td>
                <td>First Name</td>
                <td>Last Name</td>
                <td>Username</td>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>1</td>
                <td>Mark</td>
                <td>Otto</td>
                <td>@mdo</td>
            </tr>
            <tr>
                <td>2</td>
                <td>Mark</td>
                <td>Otto</td>
                <td>@mdo</td>
            </tr>
            <tr>
                <td>3</td>
                <td>Mark</td>
                <td>Otto</td>
                <td>@mdo</td>
            </tr>
        </tbody>
    </table>

table标签，注意写法，必须用thead、tbody,否则表头和身体会错位。