body {
	padding: 0;
	margin: 0;
	width: 100vw;
	height: 100vh;
	height: 100dvh;
	display: flex;
	flex-flow: row nowrap;
	font-family: Arial, sans-serif;
}

input {
	width: 100%;
}

button {
	width: 100%;
	padding: 0.5rem 0 0.5rem 0;
	background-color: #0af;
	border: none;
	border-radius: 0.3rem;
	cursor: pointer;
	transition: background-color .25s ease-in-out;
}

button:hover {
	background-color: #aaf;
}

h2, p {
	padding: 0;
	margin: 0;
}

#menu-button, #share-button {
	padding: 0.5rem;
	font-size: 2rem;
	color: white;
	background-color: #111;
	position: absolute;
	top: 0;
	cursor: pointer;
}

#menu-button {
	right: 0;
	border-bottom-left-radius: 0.5rem;
}

#share-button {
	left: 0;
	border-bottom-right-radius: 0.5rem;
}

#side-1, #side-2 {
	width: 50%;
	height: 100%;
	display: flex;
	flex-flow: column nowrap;
	justify-content: center;
	align-items: center;
}

#side-1 {
	background-color: white;
}

#side-2 {
	background-color: black;
}

.square {
	width: 10rem;
	height: 10rem;
}

.c1 {
	background-color: blue;
}

.c2 {
	background-color: orange;
}

#overlay, #share {
	display: none;
	justify-content: center;
	align-items: center;
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

#overlay table, #share table {
	background-color: #eee;
	border: none;
	border-radius: 1rem;
	max-width: 100%;
	padding: 1rem;
	box-shadow: 0px 0px 10px red;
}

#overlay td, #share td {
	text-align: center;
	padding: 0.5rem;
}

#error {
	color: red;
	font-weight: bold;
}