html, body {
  margin: 0;
  height: 100%;
}
#c {
	width: 750px;
	height: 500px;
	display: block;
}
#canvas_temp, #canvas_temp2{
	display: none;
	position: absolute;
	left: 0;
	top: 0;	
	pointer-events: none;	
}
#canvas_temp{
	z-index: 1;
}
.top-div {
	display: flex;
	position: absolute;	
	left: 0;
	top: 0;	
	width: 100%;
	height: 100%;
	padding: 10px;
	font-family: "Arial";
	font-size: 10px;	
	background: black;
	color: white;
}
.top-div::after {
	content: "Загрузка";
	display: flex;
	position: absolute;	
	width: 100%;
	height: 100%;	
	animation: loading 1s ease-in-out infinite;
	font-size: 30px;
	justify-content: center;
	align-items: center;
}
@keyframes loading{ 
  0% {
      content: "Загрузка\00a0\00a0\00a0";
  }
  35% {
      content: "Загрузка.\00a0\00a0";
  }  
  65% {
      content: "Загрузка..\00a0";
  }  
  100% {
      content: "Загрузка...";
 } 
}
a{
	margin-top: 10px;
	background: lightgray;
	padding: 10px;
	border-radius: 5px;
	text-decoration: none;
	color: black;
	font-size: 15px;
	line-height: 15px;
	border: 2px solid gray;
}
.container{
	position: relative;
	display: flex;
	width: 100vw;
	height: 100vh;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}
.big_container{
	display: flex;
	flex-direction: column;
	overflow: hidden;
}
.menu_ico{
	width: 21px;
	height: 21px;
	position:absolute;
	top: 10px;
	right: 22px;
	z-index: 2;	
	cursor: pointer;
}
.menu_ico > div:first-child, .menu_ico > div:first-child:after, .menu_ico > div:first-child:before{
	width: 12px;
	height: 2px;
	cursor: pointer;
}
.menu_ico > div:first-child{
	position:absolute;
	margin-left: 4px;	
	display: inline;
	background: darkgray;
	transform: scale(1.7);	
}
.menu_ico > div:first-child:after{
	position:absolute;
	content: "";
	background: darkgray;	
	top: 4px;
	left: 0px;		
}
.menu_ico > div:first-child:before{
	position:absolute;
	content: "";
	background: darkgray;	
	top: 8px;
	left: 0px;		
}
.slidecontainer {
	display: none;
	position: fixed;
	left: 0;
	top: 0;	
	width: 100%;
	padding: 10px;
	background: white;
	z-index: 1;	
}
.menu_ico:hover .slidecontainer{
	display: flex;	
}
#checkbox-container{
	display: grid;
	columns: 2;
	row-gap: 10px;
	padding-left: 20px;
}
.sheet{
	width: 400px;
}
.hide{
	display: none;
}