#error_message{
	color: #CC0000;
}
body {
	display: flex;
	align-items: center;
	min-height: 100vh;
	font-size: 15px;
	line-height: 1.6;
	color: #555;
	background: #f8f8f8;
	margin: 0;
	padding: 0;
}
h1 {
	font-size: 35px;
	line-height: 1.5;
	color: #000 !important;
	text-align: center;
	margin: 50px auto 0;
}
h1::after {
	display: block;
	content: "";
	width: 3em;
	border-bottom: solid 2px #555;
	margin: 20px auto 30px;
}
body > div {
	width: 600px;
	background: #FFF;
	margin: 0 auto;
	padding: 20px 20px 50px;
}
input {
	padding: 0;
	border: none;
	border-radius: 0;
	outline: none;
	background: none;
	-webkit-appearance: none;
}
p {
	text-align: center;
	color: #DE5D50;
}
.alignC {
	text-align: center;
}
.txt_black,
.txt_black * {
	color: #555 !important;
}
.pc {
	display: block;
}
.sp {
	display: none;
}

/* form */
#certification-form {
}
#certification-form div {
	display: table;
	width: 80%;
	vertical-align: middle;
	margin: 0 auto 15px;
}
#certification-form div label {
	display: table-cell;
	width: 25%;
}
#certification-form input[type="text"],
#certification-form input[type="password"],
#certification-form input[type="number"] {
	display: table-cell;
	width: 100%;
	max-width: 300px;
	font-size: 1.12rem;
	line-height: 1.6;
	background: #FFF;
	border: solid 1px #CCC;
	padding: 5px 10px;
	box-sizing: border-box;
}
#certification-form div:last-of-type,
div.alignC {
	text-align: center;
}
button {
	cursor: pointer;
	display: inline-block;
	font-size: 16px;
	line-height: 1.8;
	min-width: 200px;
	color: #FFF;
	background: #DE5D50;
	padding: 12px 20px;
	border: none;
	text-decoration: none;
	box-sizing: border-box;
}
button:hover {
	opacity: 0.8;
}
.txt_black button {
	color: #FFF !important;
	background: #54687A;
}
@media only screen and (max-width: 599px) {
	body {
		display: block;
		font-size: 15px;
		line-height: 1.6;
	}
	body > div {
		width: 90%;
		padding: 12px;
	}
	p {
		text-align: left;
	}
	.pc {
		display: none;
	}
	.sp {
		display: block;
	}
	#certification-form div {
		display: block;
		width: auto;
	}
	#certification-form div label {
		display: block;
		width: auto;
	}
	#certification-form input[type="text"],
	#certification-form input[type="password"],
	#certification-form input[type="number"] {
		display: inline-block;
		max-width: unset;
	}
}
@media only screen and (max-width: 480px) {
	button {
		display: block;
		width: 100%;
		margin-bottom: 15px;
	}
}