* {
    margin: 0;
    padding: 0;
}
header {
    background-color:rgba(33, 33, 33, 0.9);
    color:#ffffff;
    display:block;
    font: 14px/1.3 Arial,sans-serif;
    height:50px;
    position:relative;
}
header h2{
    font-size: 22px;
    margin: 0px auto;
    padding: 10px 0;
    width: 80%;
    text-align: center;
}
header a, a:visited {
    text-decoration:none;
    color:#fcfcfc;
}
body {
    background:url("../images/back_3d.jpg") no-repeat scroll top center transparent;
}
#game_object {
    background-color: #ffffff;
    height: 705px;
    margin: 20px auto;
    position: relative;
    width: 705px;
}
#board div {
    background: url("../images/cat_face.jpg") no-repeat scroll 0 0 #ffffff;
    cursor: pointer;
    height: 175px;
    line-height: 175px;
    position: absolute;
    text-align: center;
    width: 175px;

    /* css3 shadow */
    -moz-box-shadow: inset 0 0 20px #555555;
    -webkit-box-shadow: inset 0 0 20px #555555;
    -ms-box-shadow: inset 0 0 20px #555555;
    -o-box-shadow: inset 0 0 20px #555555;
    box-shadow: inset 0 0 20px #555555; 
}