body{
	margin: 0;
	padding: 0;
	/* display: flex; */
	/* justify-content: center; */
	/* align-items: center; */
	min-height: 100vh;
	font-family: 'Jost', sans-serif;
	/* background: linear-gradient(to bottom, #92c0eb, #c9bb3f); */
	background: #C2CAD0;
	/* background: #EAE7DC; */

	/* make sure in mobile form the translateXed overflow nav bar do not show off */
	overflow-x: hidden;
}

#alert-hint {
	display: none;
}

.main_login_box label{
	/* set "登入" label color */
	color: rgb(95, 117, 177); 
	font-size: 2.3em;
	justify-content: center;
	display: flex;
	margin: 60px;
	font-weight: bold;
	cursor: pointer;
	transition: .5s ease-in-out;
}
.main_login_box input{
	width: 60%;
	height: 30px;
	background: #e0dede;
	justify-content: center;
	display: flex;
	margin: 20px auto;
	padding: 10px;
	border: none;
	outline: none;
	border-radius: 5px;
}
.main_login_box button{
	width: 60%;
	height: 40px;
	margin: 10px auto;
	justify-content: center;
	display: block;
	color: #fff;
	background: #573b8a;
	font-size: 1em;
	font-weight: bold;
	margin-top: 20px;
	outline: none;
	border: none;
	border-radius: 5px;
	transition: .2s ease-in;
	cursor: pointer;
}
.main_login_box button:hover{
	background: #6d44b8;
}



/* ############################################ */
/* ########### login signup checkbox ########## */
/* ############################################ */
.main_login_box{
	/* position fixed make .main_login_box class do not interact with other elements */
	position: fixed;
	width: 400px;
	height: 600px;
	/* these top, left, margin settings make this .main_login_box class in middle of the page */
	top: 50%;
	left: 50%;
	margin-top: -300px;
	margin-left: -200px;
	/* margin: auto; */

	background: red;
	overflow: hidden;
	background: url("https://doc-08-2c-docs.googleusercontent.com/docs/securesc/68c90smiglihng9534mvqmq1946dmis5/fo0picsp1nhiucmc0l25s29respgpr4j/1631524275000/03522360960922298374/03522360960922298374/1Sx0jhdpEpnNIydS4rnN4kHSJtU1EyWka?e=view&authuser=0&nonce=gcrocepgbb17m&user=03522360960922298374&hash=tfhgbs86ka6divo3llbvp93mg4csvb38") no-repeat center/ cover;
	border-radius: 10px;
	box-shadow: 5px 20px 50px #000;
}

#chk{
	display: none;
}
.login{
	position: relative;
	width:100%;
	height: 85%;
	/* margin-top: 10%; */
	/* background: #eee; */
	transition: .8s ease-in-out;
}
.signup{
	height: 460px;
	background: #eee;
	border-radius: 60% / 10%;
	transform: translateY(-100px);
	transition: .8s ease-in-out;
}
.signup label{
	color: #573b8a;
	transform: scale(.8);
	/*transform: scale(.6);*/
}

/* all child elements of a checkbox is default unchecked */
/* only one can be checked at one time */
#chk:checked ~ .signup{
	transform: translateY(-460px); /* if checked, move down 500px */
}
#chk:checked ~ .signup label{
	transform: scale(1); /* if checked, scale down the size to 0.6 */	
}
#chk:checked ~ .login{
	transform: scale(.8);
}