index.css

html, body {
  margin: 0;
  background-image: linear-gradient(rgb(0, 0, 0), rgb(88, 88, 88));
  height: 100%;
  width: 100%;
  background-repeat: no-repeat;
  background-size: cover;
  background-color: #000;
  color: #fff;
  font-family: Monospace;
  font-size: 13px;
  line-height: 24px;
  overflow-x: hidden;
  overflow-y: auto;
}

a {
	color: rgb(102, 255, 0);
	text-decoration: underline;
}

a:hover {
	text-decoration: underline;
}

button {
        height: 35px;
        font-size: 15px;
        background-color: #333;
/*
  color: #ffac13;
  color: #0f0;
*/
  color: #abcdef;
	cursor: pointer;
}

a, button, input, select {
	pointer-events: auto;
}

.lil-gui {
	z-index: 2 !important; /* TODO Solve this in HTML */
}

@media all and ( max-width: 640px ) {
	.lil-gui.root { 
		right: auto;
		top: auto;
		max-height: 50%;
		max-width: 80%;
		bottom: 0;
		left: 0;
	}
}

#overlay {
	position: absolute;
	font-size: 16px;
	z-index: 2;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	background: rgba(0,0,0,0.7);
}

#overlay button {
  background: transparent;
  border: 0;
  border: 1px solid rgb(255, 255, 255);
  border-radius: 4px;
  color: #ffffff;
  padding: 12px 18px;
  text-transform: uppercase;
  cursor: pointer;
}

#notSupported {
	width: 50%;
	margin: auto;
	background-color: #f00;
	margin-top: 20px;
	padding: 10px;
}

.lil-gui { 
	--background-color:rgba(20, 20, 20, 0.6);
	--widget-color: rgba(75, 75, 75, 0.5);
  --number-color: rgb(102, 189, 30);
  --widget-height: 20px;
	--padding: 2px;
  --font-size: 16px;
  --input-font-size: 16px;
}

#logo
{
  visibility: hidden;
  display:block;
  position: absolute;
  width:85px;
  height:85px;
  top: -10px;
  left: 0px;
  cursor: pointer;
}

#head
{ 
  position: absolute;
  top: 15px;
  left: 20px;
  font-size: 185%;
  font-style: italic;
  color: #ffac13;
  cursor: pointer;
}

#slogan
{ 
  position: absolute;
  top: 35px;
  left: 20px;
  font-size: 115%;
  color: #ffffff;
  opacity: 0.6;
  cursor: pointer;
  font-style: italic;
}

#line {
  position:absolute;
  top:60px;
  width: 100%;
}

#name {
  color: #ffac13;
  position: absolute;
  top: 85px;
  left: 35px;
  font-size: 145%;
  font-style: italic;
}

#description {
  color: #fff;
  opacity:0.8;
  position: absolute;
  top: 115px;
  left: 35px;
  font-size: 130%;
  font-style: italic;
}

.nav {
  display:block;
  position: absolute;
  width:36px;
  color:#ff0000;  
  opacity:0.6;
  cursor: pointer;
}

#prev {
  bottom: 40px;
  left: 50px;
}

#next {
  bottom: 40px;
  right: 50px;
}

#grid_icon
{
  top: 14px;
  right: 10px;
}

::backdrop {
  background-image: linear-gradient(
    rgb(88, 88, 88),
    rgb(0, 0, 0)
  );
  opacity: 0.75;
}

/* TODO: ~200px for 16:9 */
/*
  max-height: 850px;
  width: auto;
  margin-top: auto;
  margin-bottom: auto;
  margin-left: auto;
  margin-right: auto;
*/   
#image {
  display: block;
  margin: auto; 
  max-width: 100%;
}

#image_place
{
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ---------------------------------------------------------------- */
a {
	color: #ff0;
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}
/*
#logo {
  top: 3px;
  left: 10px;
	width: 100%;
	padding: 10px;
	box-sizing: border-box;
	text-align: left;
	-moz-user-select: none;
	-webkit-user-select: none;
	-ms-user-select: none;
	user-select: none;
  font-size: 200%;
  color: #ff9127;
  z-index: 2;
  cursor: pointer;
}
*/
a, button, input, select {
	pointer-events: auto;
}

@media all and ( max-width: 640px ) {
	.lil-gui.root { 
		right: auto;
		top: auto;
		max-height: 50%;
		max-width: 80%;
		bottom: 0;
		left: 0;
	}
}

#scene_name {
  position: absolute;
  top: 10px;
  right: 52px;
  color:rgba(255, 255, 255, 0.5);
  margin: 10px;
  font-size: 160%;
}

#video_button {
  position:absolute;
/*
  right:108px;
*/
  right:124px;
  top:12px;
  opacity:0.5
}

#upload_button {
  position:absolute;
  top:10px;
  right:68px;
/*  right:14px; */
  opacity:0.5
}

#hide_editor_button {
  visibility: visible; /* Show on XR ready */
  position:absolute;
  top:12px;
  right:14px;
  opacity:0.5
}

#gallery_button {
  visibility: hidden; /* Show on XR ready */
  position:absolute;
  top:16px;
  right:14px;
  opacity:0.5
}

.lil-gui {
  --background-color:rgba(44, 44, 44, 0.6);
  --title-background-color:rgba(44, 44, 44, 0.6);
  --widget-color: rgba(75, 75, 75, 0.7);
  --number-color: #ff9127;
  --title-text-color: #ff9127;
  --text-color: rgb(190, 190, 190);
  --name-width: 20%;
  --widget-height: 24px;
  --slider-knob-width: 5px;
  --slider-input-width: 60px;
  --slider-input-min-width: 60x;
  --font-size: 16px;
  --input-font-size: 16px;
  --font-family: Monospace;
  z-index: 2 !important;
}

#about
{
  width: 600px;

  -moz-box-shadow: 5px 5px 7px #535353;
  -webkit-box-shadow: 5px 5px 7px #535353;
  box-shadow: 5px 5px 7px #535353;

  -moz-border-radius: 8px 8px 8px 8px;
  -webkit-border-radius: 8px;
  border-radius: 8px 8px 8px 8px;

  border-width: 0px;
  font-size: 18px;
  opacity: 0.7;
  color:rgb(255, 255, 255);
  background-color: rgb(0,0,0);

  padding: 20px;
  padding-top: 30px;
  padding-left: 40px;
}

::backdrop {
  opacity: 0.5;
}


#form_upload {
  position: absolute;
  top: calc(50vh - 200px);
  left: calc(50vw - 100px); 
  border-radius: 4px;
  color: #ff9127;
  background-color:rgba(75, 75, 75, 0.7);
  font-size: 16px;
  padding: 30px;
  padding-top: 20px;
  padding-left: 40px;
  visibility: hidden;
  z-index: 999;
}

#video {
  width:1280px;
  height:720px;
  position:absolute;
  top: 130px;
  left: 8px;
  z-index:0;
  visibility:hidden'
}

.CodeMirror{
  resize: none;
  position: absolute;
  top: 81px;
  right: 10px; 
  width: 605px;
  height: 870px;
  font-family: Monospace;
  font-size: 16px;
  line-height: 22px;
  border: 1px solid #ddd;
  z-index:2
}

#result
{
  position: absolute;
  top: 130px;
  left: 8px;
}

#console_result
{
  position: absolute;
  top: 85px;
  left: 8px;
  width: auto;
  max-height: 800px;
  border: 1px solid #ddd;
  visibility:hidden;
  z-index:0;
}

#upload_code
{
  visibility: hidden; /* DEBUG: - make icon */
  font-size: 115%;
  position:absolute;
  left:260px;
  bottom:10px;
  width:124px;
  height:34px;
  z-index:2;
}

#about_button
{
  visibility: hidden;

  font-family: Monospace;
  font-size: 145%;
  position:absolute;
  right:40px;
  top:15px;
  background-color:#000;
  font-style: italic;
}

#posts
{
  position: absolute;
  top: 100px;
  width: 100px;
  right: -10px;
  padding: 10px;
  box-sizing: border-box;
  text-align: center;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  user-select: none;
  pointer-events: none;
  z-index: 1;
}

.scenes
{
  position: absolute;
  bottom: 16px;
  left:  40px;
  padding: 10px;
  box-sizing: border-box;
  text-align: center;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  user-select: none;
  pointer-events: none;
  z-index: 2;
}

/* Tooltips */
[data-title] {
  position: relative;
  cursor: pointer;
}

[data-title]:hover::before {
  content: attr(data-title);
  position: absolute;
  bottom: 36px;
  display: inline-block;
  padding: 6px 8px;
  border-radius: 2px;
  background: #333;
  color: #aaa;
  font-size: 12px;
  font-family: sans-serif;
  white-space: nowrap;
}

[data-title]:hover::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 8px;
  display: inline-block;
  color: #aaa;
  border: 8px solid transparent;	
  border-bottom: 8px solid #000;
}

#time
{ 
  position: absolute;
  top: 75px;
  left: 10px;
  font-size: 120%;
  color: #ffffff;
  opacity: 0.6;
  font-style: italic;
}