body {
    outline: none;
    width: 100%;
    height: 100%;
    margin: 0;
    text-align: center;
    padding: 2em;
    overflow: hidden;
    -webkit-touch-callout:none;
    -webkit-user-select:none;
    -khtml-user-select:none;
    -moz-user-select:none;
    -ms-user-select:none;
    user-select:none;
    -webkit-tap-highlight-color:rgba(0,0,0,0);
    padding: 0;
    margin: 0;
    background-color: #35363A;
}
*:focus {
    outline: none !important;
    -webkit-tap-highlight-color: transparent;
}
canvas {
    outline: none;
    display: block;
    box-shadow: 0 0px 8px 0 rgba(0, 0, 0, 1);
    max-width: 100%;
    max-height: 100%;
    position: absolute;
    margin:auto;
    top:0;
    bottom:0;
    left:0;
    right:0;
    tab-index: 1;
    -webkit-touch-callout:none;
    -webkit-user-select:none;
    -khtml-user-select:none;
    -moz-user-select:none;
    -ms-user-select:none;
    user-select:none;
}
div {
    outline: none;
    pointer-events: auto;
    background-color: rgba(0, 0, 0, 0);
    position: fixed;
    margin: 0;
    padding: 0;
    border: 0;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    -webkit-touch-callout:none;
    -webkit-user-select:none;
    -khtml-user-select:none;
    -moz-user-select:none;
    -ms-user-select:none;
    user-select:none;
}