:root { color-scheme: dark; }
html, body {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
"Segoe UI", Roboto, sans-serif;
-webkit-tap-highlight-color: transparent;
}
/* The background belongs on ALONE.
MindAR inserts the camera