canvas {
	display: block;
	position: fixed;
	top: 0;
	left: 0;
}

form#controls {
	position: fixed;
	z-index: 1;
	right: 20px;
	top: 10px;
	background: #ffffff77;
	padding: 5px;
}

input[type="range"] {
	width: 250px;
}

body {
	margin: 0;
}

input {
	margin: 3px;
}

div#tips {
	position: fixed;
	z-index: 5;
	background: #ffffff77;
	font-size: 18px;
	font-family: consolas;
	left: 5px;
	bottom: 10px;
	padding: 5px;
}

div.position {
	width: 7px;
	height: 7px;
	border-right: 4px solid black;
	border-bottom: 4px solid black;
	display: inline-block;
	margin: 4px;
}

div.position:hover {
	border-color: gray;
	cursor: pointer;
}

div.position#right {
	transform: rotate(-45deg);
}

div.position#left {
	transform: rotate(135deg);
}

div.position#top {
	transform: rotate(225deg);
}

div.position#bottom {
	transform: rotate(45deg);
}

span#span-function {
	background: white;
	border: 1px solid #767676;
	border-radius: 2px;
	padding: 2.5px 4px;
	font-family: Arial;
	font-size: 13px;
}

input#function {
	border: none;
	outline: none;
}

.disabled, .disabled * {
	color: gray;
	border-color: gray !important;
	pointer-events: none;
}

div#author {
	position: fixed;
	z-index: 10;
	bottom: 10px;
	right: 20px;
	font-family: consolas;
}