html {
	overflow-x: hidden;
	overflow-y: auto;
	height: 100dvh;
	width: 100dvw;
	font-family: sans-serif;
	-ms-text-size-adjust: 100%;
	-webkit-text-size-adjust: 100%;
	border: 0 !important;
	padding: 0 !important;
}

body {
	height: 100%;
	width: 100%;
	overflow-x: hidden;
	font-size: 100%;
	margin: 0;
	padding: 0;
	color: #424242;
	text-rendering: optimizeLegibility;
  	text-align: center;
  	background: transparent;
  	font-size: 1rem;
}

header,
section {
	display: block;
}

header {
	text-align: center;
	margin-bottom: 0.5em;
	font-size: 1.1em !important;
	padding: 0.5em;
	width: 100%;
	color: #424242;
	box-shadow: 0px 2px 5px 0px rgba(0,0,0,0.16),0px 2px 5px 0px rgba(0,0,0,0.23);
	position: fixed;
	background: rgba(255,255,255,0.6)
}

select {
	border: none;
	background: transparent;
	vertical-align: middle;
	font: inherit;
}

section {
	padding: 3em 0;
	margin: 0 auto;
	width: 90%;
	max-width: 90%;
}

section:not(#flat) {
	display: none;
}

section span {
	display: inline-block;
	width: 3em;
	max-width: 3em;
	height: 3em;
	max-height: 3em;
	margin: 0.2em;
	color: rgba(0,0,0,0);
	-webkit-transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),-webkit-transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	box-shadow: 0px 2px 5px 0px rgba(0,0,0,0.16),0px 2px 5px 0px rgba(0,0,0,0.23);
	cursor: pointer;
	text-indent: -9000px;
}

[type="radio"] {
	margin: 0 0.25em;
	vertical-align: middle;
}

label {
	vertical-align: middle !important;
	font-weight: bold;
}

label:not(:first-child) {
	margin-left: 0.5rem;
}