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

#glcanvas,
#outcanvas {
   position: fixed;
   inset: 0;
   width: 100vw;
   height: 100vh;
   display: block;
}

#glcanvas {
   z-index: 0;
}

#outcanvas {
   z-index: 9999;
   pointer-events: none;
}