                       <div id="sparkline4"></div>
                    </div>
                </div>
            </div>
        </div>
        <div class="row">
            <div class="col-sm-3">
                <div class="ibox">
                    <div class="ibox-content">
                        <h5>使用率</h5>
                        <h2>65%</h2>
                        <div class="progress progress-mini">
                            <div style="width: 68%;" class="progress-bar"></div>
            