html, body {
    -ms-touch-action: none;
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    -ms-box-align: middle;
    -ms-box-orient: vertical;
    -ms-box-pack: center;
    display: -ms-box;
}

.fixedlayout {
    -ms-grid-columns: 1fr;
    -ms-grid-rows: 1fr;
    display: -ms-grid;
    height: 768px;
    width: 1024px;
}

body {
    background-color: black;
}

#canvas {
    background-color: #FFF;
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    cursor: none;
}

#restartBtn {
    display: block;
    position: fixed;
    bottom: 0;
    left: 100px;
    right: 100px;
    height: 50px;
    text-align: center;
    font-size: 25px;
    -ms-transition: 1s;
    opacity: 0;
    z-index: 1;
}
#restartBtn.visible {
    opacity: 1; 
    bottom: 0;
    display: block; 
    -ms-transition: 1s ease-out 1s;
}

@media screen and (-ms-view-state: fullscreen-landscape) {
}

@media screen and (-ms-view-state: filled) {
}

@media screen and (-ms-view-state: snapped) {
}

@media screen and (-ms-view-state: fullscreen-portrait) {
}