html, body{
    height: 100%;
    margin: 0px;
    padding: 0px;
}

body{
    background-color:lightgray
}

#gamePanel{
    position:absolute;
    width: 400px;
    height: 500px;
    margin-top: 60px;
    border-color: gray;
    border-style: solid;
    border-width: 5px;
    background-image:url('img.jpg');
    background-repeat:no-repeat;
    background-position:center center;
    background-size:cover;
}

.card{
    float:left;
    width:90px;
    height:90px;
    border-color:black;
    border-radius:12px;
    border-style:solid;
    border-width:5px;
    text-align:center;
    vertical-align:middle;
    line-height:90px;
    font-size:xx-large;
}

.back{
    background-color:rgba(65, 105, 225, 0.7);
}

.face{
    background-color:rgba(64, 224, 208, 0.7);
}

.matched{
    background-color:transparent;
    border-color:transparent;
}

#controlPanel{
    position:absolute;
    top:580px;
    width: 410px;
    text-align: right;
}

#displayPanel{
    position: absolute;
    left: 240px;
    top:10px;
    width: 160px;
    font-size: large;
}

.score{
    float:left;
    width:80px;
}

.clear{
    clear:left;
}

button{
    font-size:large;
}

input[type=file]{
    visibility:hidden;
    width:1px;
}