html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background-color: black;
}

body {
    margin-top: 0.5;
}

body,
body * {
    -webkit-touch-callout: none;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

input {
    user-select: auto;
    -webkit-user-select: auto;
}

#canvas::selection,
#canvas::-moz-selection,
#canvas::-webkit-selection {
    background: transparent;
}

#canvas {
    margin: 0;
    padding: 0;
    border: 0 none;
    clear: both;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}