<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>SfMFlex</title>
  <!--  Simple reset to delete the margins  -->
  <style>
    body { margin: 0; }
    canvas { width: 100%; height: 100% }
    #overlay {
        position: absolute;
        top: 10px;
        left: 10px;
        width: 300px;
        text-align: center;
        z-index: 100;
        display: block;
        background: #fff;
    }
    #overlay td{ color: #000; }
    #kb_overlay {
        color: #fff;
        position: fixed;
       