body {
    margin: 0;
    overflow: hidden;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #404040;
    color: white;
    font-family: Arial;
    -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Chrome/Safari/Opera */
    -khtml-user-select: none; /* Konqueror */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* Internet Explorer/Edge */
    user-select: none; /* Non-prefixed version, currently not supported by any browser */
}



.fill {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}