html, body {
	height: 100%;
	width: 100%;
	margin: 0;
	/* user-select: none; */
	background-color: #f0f0f0;
}
#main {
	position: fixed;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
	text-align: center;
}
#main h1 {
	font-size: 30px;
	margin: 0 0 8px 0;
}
#main p {
	font-size: 17px;
	margin: 0 0 12px 0;
}
#main_context {
	display: inline-block;
	vertical-align: middle;
	background-color: #fff;
	height: 30px;
	padding: 0 10px;
	border: 2px solid;
	border-color: #bbb;
	border-radius: 6px;
	outline: none;
	font-size: 16px;
	width: 320px;
	transition: all .1s;
}
#main_context:focus {
	border-color: #0078d4;
}
#main button {
	display: inline-block;
	vertical-align: middle;
	border: none;
	outline: none;
	background-color: #0078d4;
	color: #fff;
	border-radius: 6px;
	height: 34px;
	font-size: 16px;
	width: 90px;
	transition: all .1s;
}
#main button:hover {
	filter: brightness(1.1);
}
#main button:active {
	filter: brightness(.9);
}
#main_choice {
	margin: 8px 0 12px 0;
}
#main_choice input[type=radio] {
	width: 18px;
	height: 18px;
	vertical-align: middle;
}
#main_choice label {
	font-size: 16px;
	vertical-align: middle;
}
#main_img {
	position: relative;
	margin: 0;
	width: 650px;
	height: 487px;
	overflow: hidden;
	font-size: 0;
}
#main_img .bg {
	position: relative;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	line-height: 0;
}
#main_img .context {
	font-size: 52px;
	font-weight: bolder;
	position: absolute;
	margin: 0;
	width: fit-content;
	height: fit-content;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
	white-space: nowrap;
}
#main_img .ft {
	position: absolute;
	width: 100%;
	height: 60%;
	top: 20%;
	left: 0;
	object-fit: contain;
}

@media screen and (max-width: 700px) {
	#main {
		width: 100vw;
	}
	#main_context {
		width: calc(100% - 230px);
	}
	#main_img {
		width: 100%;
		height: auto;
	}
	#main_img .context {
		font-size: 38px;
	}
}