*, *:before, *:after {
    box-sizing: border-box;
}

body {
    margin:0px;
    padding:0px;
}

#area {
    width: 100vw;
    height:100vh;
    border:5px solid rgb(0, 103, 0);
    padding:0px;
    margin: auto auto;
    background-color:black;
}

#canvas {
    xborder:1px solid grey;
    margin: auto auto;
    width: 100%;
    height: 100%;
    xpadding:10px;
}