#centerbox {
  margin: 50px auto 0px auto;
  height: 400%;
  width: 300px;
  padding: 10px;
  border: 1px solid #fff;
  border-radius: 5px;
  -moz-border-radius: 5px;
	-webkit-border-radius: 5px;
	-khtml-border-radius: 5px;
  }
  body {
  background:url(https://images.unsplash.com/photo-1533702165324-66678e2069b2?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80);
  background-repeat: no-repeat;
  background-size:cover;
  background-size: cover;

  font-family: lucida grande, tahoma, verdana, arial, sans-serif;
  color: #999;
  }
  a {
  color: #6699cc;
  text-decoration: none;
  }
  a:hover {
  color: #336699;
  text-decoration: underline;
  }

    /*** tetris 168,308 ***/

    #tetris {
        position: relative;
        width: 300px;
        height: 310px;
        border: 1px solid #BAA68E;
        background: #ffffff;
        margin: 0 auto;
    }
    
    /*** left ***/

    #tetris .left {
        background: #F5EDE3;
        position: absolute;
        width: 130px;
        height: 100%;
        left: 0px;
        top: 0px;
    }
    #tetris .left h1 {
        font-size: 11px;
        text-align: center;
        margin-top: 10px;
        margin-bottom: 10px;
    }
    #tetris .left h1 a {
        color: #3366CC;
        text-decoration: none;
    }
    #tetris .left h1 a:hover {
        color: #FF6600;
        text-decoration: none;
    }
    
    /* menu */
    
    #tetris .left .menu {
        text-align: center;
    }
    #tetris .left input {
        font: 10px tahoma;
        color: #333333;
        text-transform: uppercase;
        background: #EAE0D1;
    }
    #tetris .left .menu input {
        width: 90px;
    }

    /* keyboard */

    #tetris .left .keyboard {
        position: absolute;
        top: 163px;
        left: 32px;
        width: 85px;
        height: 55px;
        overflow: visible;
        display: none;
    }
    #tetris .left .keyboard input {
        font: 11px tahoma;
        width: 25px;
        height: 25px;
        padding-bottom: 2px;
        text-transform: none;
    }
    * html #tetris .left .keyboard input {
        padding-left: 1px;
    }
    #tetris .left .keyboard .up {
        position: absolute;
        left: 30px;
        top: 0px;
        width: 30px;
        height: 30px;
    }
    #tetris .left .keyboard .up input {
        font: 15px tahoma;
        padding-top: 3px;
    }
    #tetris .left .keyboard .down {
        position: absolute;
        left: 30px;
        top: 30px;
        width: 30px;
        height: 30px;
    }
    #tetris .left .keyboard .down input {
        font: 14px tahoma;
    }
    #tetris .left .keyboard .left {
        position: absolute;
        left: 0px;
        top: 30px;
        width: 30px;
        height: 30px;
    }
    #tetris .left .keyboard .right {
        position: absolute;
        left: 60px;
        top: 30px;
        width: 30px;
        height: 30px;
    }

    /* game over */

    #tetris-gameover {
        position: absolute;
        width: 100%;
        top: 50%;
        text-align: center;
        font-weight: bold;
        display: none;
    }

    /* next puzzle */
    #tetris-nextpuzzle {
        position: absolute;
        top: 49%;
        left: 35%;
        background: #ffffff;
        overflow: visible;
        display: none;
    }

    /* stats */

    #tetris .left .stats {
        position: absolute;
        left: 35px;
        bottom: 10px;
    }
    #tetris .stats td { padding-bottom: 1px; }
    
    #tetris .stats .level { text-align: right; padding-right: 10px; }
    #tetris-stats-level { font-weight: bold; }

    #tetris .stats .time { text-align: right; padding-right: 10px; }
    #tetris-stats-time { font-weight: bold; }
    
    #tetris .stats .apm { text-align: right; padding-right: 10px; }
    #tetris-stats-apm { font-weight: bold; }

    #tetris .stats .lines { text-align: right; padding-right: 10px; }
    #tetris-stats-lines { font-weight: bold; }

    #tetris .stats .score { text-align: right; padding-right: 10px; }
    #tetris-stats-score { font-weight: bold; }

    /*** area ***/

    #tetris-area {
        background: black;
        position: absolute;
        width: 168px;
        height: 308px;
        left: 131px;
        top: 1px;
        overflow: hidden;
    }

    #tetris .block0,
    #tetris .block1,
    #tetris .block2,
    #tetris .block3,
    #tetris .block4,
    #tetris .block5,
    #tetris .block6 {
        position: absolute;
        width: 13px;
        height: 13px;
        border: 0.5px solid black;
        /* with margin 0.5px there were problems with offsetLeft and offsetTop */
    }
    #tetris .block0,
    #tetris .block1 {
        background: #6699FF;
    }
    #tetris .block2,
    #tetris .block3 {
        background: #FF6600;
    }
    #tetris .block4 {
        background: #FFAC1C;
    }
    #tetris .block5 {
        background: #BAA68E;
    }
    #tetris .block6 {
        background: #FF0000;
    }

    /*** window ***/

    #tetris .window {
        background: #EFE8DE;
        position: absolute;
        width: 168px;
        height: 308px;
        left: 131px;
        top: 1px;
        z-index: 5;
        display: none;
    }
    #tetris .window .top {
        position: relative;
        background: #EAE0D1;
        color: #666666;
        font: 10px tahoma;
        letter-spacing: +1px;
        height: 20px;
        line-height: 20px;
        vertical-align: middle;
        border-bottom: 1px solid #ffffff;
        text-indent: 10px;
    }
    #tetris .window .top .close {
        position: absolute;
        background: #EAE0D1;
        font: 11px verdana;
        font-weight: bold;
        right: 0px;
        top: 0px;
        height: 20px;
        line-height: 19px;
        text-indent: 7px;
        width: 21px;
        border-left: 1px solid #ffffff;
        cursor: pointer;
    }
    #tetris .window .top .close:hover {
        background: #EFE8DE;
    }
    #tetris .window .content {
        font: 10px tahoma;
        margin: 10px;
    }
    #tetris .window .content table {
        font: 10px tahoma;
    }