body{
	margin: 0;
	user-select: none;
	-webkit-user-select: none;
}

.frame{
	border-color: DarkGray;
	border-style: solid;
	border-width: 2px;
	border-radius: 4px;
	padding: 3px;
	display: inline-block;
	position: relative;
}

img.preload{
	visibility: hidden;
	display: none;
}

img#box{
	position: absolute;
	top: 49px;
	left: 29px;
}

img#burner{
	position: absolute;
	top: 300px;
	left: 68px;
}


#show-energy{
	position: absolute;
	top: 330px;
	left: 390px;
}

#heat{
	position: absolute;
	top: 285px;
	left: 390px;
}

span.label{
	position: absolute;
	color: #2f4154;
	font-size: 20px;
	font-family: Microsoft YaHei;
}

span#show-energy-label{
	top: 331px;
	left: 290px;
}

span#heat-label{
	top: 286px;
	left: 330px;
}

#choose-type{
	position: absolute;
	top: 225px;
	left: 265px;
}



/* Group button */
div.btn-group > .btn{
	display: inline-block;
	margin: 0;
	float: left;
	padding: 5px 14px;
	font-size: 19px;
	font-family: Microsoft YaHei;
	transition: background 0.3s;
	background-color: #dddddd;
	color: #516479;
}

div.btn-group > .btn.active{
	background-color: #1ABC9C;
	color: #2f4154;
}

div.btn-group > .btn:hover:not(.active){
	background-color: #ccc;
	cursor: pointer;
}

div.btn-group > .btn:first-child{
	border-radius: 6px 0 0 6px;
}
div.btn-group > .btn:last-child{
	border-radius: 0 6px 6px 0;
}


/* toggle button */

div.toggle-btn {
	position: relative;
	padding: 2px;
	width: 48px;
	height: 30px;
	background-color: #dddddd;
	border-radius: 30px;
	-webkit-transition: background 0.3s;
	transition: background 0.3s;
	box-sizing: border-box;
}

div.toggle-btn:hover {
	cursor: pointer;
}

div.toggle-btn:before, div.toggle-btn:after {
	content: "";
	display: block;
	position: absolute;
}
div.toggle-btn:before {
	top: 2px;
	left: 2px;
	bottom: 2px;
	right: 2px;
	background-color: #fff;
	border-radius: 26px;
	-webkit-transition: background 0.3s;
	transition: background 0.3s;
}
div.toggle-btn:after {
	top: 4px;
	left: 5px;
	bottom: 4px;
	width: 22px;
	background-color: #dddddd;
	border-radius: 22px;
	-webkit-transition:transform 0.3s, background 0.3s;
	transition: transform 0.3s, background 0.3s;
}
div.toggle-btn.active {
	background-color: #1ABC9C;
}
div.toggle-btn.active:after {
	transform: translate3d(16px, 0, 0);
	-webkit-transform: translate3d(16px, 0, 0);
	background-color: #1ABC9C;
}