#box {
    display:none;
    position:absolute;
    border-radius:15px;
    width:auto;
    background-color: rgba(0, 0, 0, 0.8);
    border:2px solid black;
}

#box > #boxinner {
    margin-left:10px;
    margin-right:10px;
    font-family: 'Readex Pro', sans-serif;
    color: white;
}

#gl_canvas {
    width: 100%;
    height: 100%;
    z-index: 0;
}

body {
    margin: 0;
    height: 100%;
    overflow: hidden;
}

#btn-refresh {
    position:absolute;
    display:none;
    z-index: 1;
    bottom: 10%;
    left: 10%;
}