body{
	margin: 0;
	padding: 0;
	display: flex;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
	background: #008080;
}
.window{
	width: fit-content;
}
/*signup*/
.main{
	width: 350px;
	height: 500px;
	overflow: hidden;
}
#chk{
	display: none;
}
.signup{
	position: relative;
	width:100%;
	height: 100%;
}
label{
	color: #000000;
	font-size: 2.3em;
	justify-content: center;
	display: flex;
	margin: 60px;
	font-weight: bold;
	cursor: pointer;
	transition: .5s ease-in-out;
}
.error {
	color: #ff0000;
	font-size: 1em;
	justify-content: center;
	display: flex;
	font-weight: bold;
	cursor: pointer;
	transition: .5s ease-in-out;
}
input{
	width: 60%;
	height: 20px;
	justify-content: center;
	display: flex;
	margin: 20px auto;
	padding: 10px;
	outline: none;
	background: #fff;
	border: none;
	border-radius: 0;
	box-shadow: inset -1px -1px #fff, inset 1px 1px grey, inset -2px -2px #dfdfdf, inset 2px 2px #0a0a0a;
}
::placeholder {
	color: #758283;
	opacity: 1; /* Firefox */
}
#signupbtn, #loginbtn{
	width: 60%;
	height: 40px;
	margin: 10px auto;
	justify-content: center;
	display: block;
	font-size: 1em;
	font-weight: bold;
	margin-top: 20px;
	cursor: pointer;
}
.login{
	height: 460px;
	background: silver;
	border-top: 1px solid #808080;
	transform: translateY(-180px);
	transition: .8s ease-in-out;
}
.login label{
	color: #000080;
	transform: scale(.6);
}

.signup label{
	color: #000000;
	transform: scale(.6);
}

#chk:checked ~ .login{
	transform: translateY(-500px);
}
#chk:checked ~ .login label{
	transform: scale(1);
}
#chk:checked ~ .signup label{
	transform: scale(.6);
}

.backstage-note { text-align: center; margin: 14px 8px 0; font: 16px/1.5 "Pixelated MS Sans Serif", Arial, sans-serif; }

input, #signupbtn, #loginbtn { font-size: 14px; }