.bg {
	position: relative;
	background-image: url(/img/v_bg.jpg);
}

.bg::after {
	content: '';
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	background: linear-gradient(45deg, #190ae2,#3bd1ff,#6a6dff);/*グラデーションを定義*/
	background-size: 150% 130%;
	opacity: 0.3;
	animation: bggradient 5s ease infinite;
	z-index: -1;
}

.inner {
	z-index: 1;
}

.banner {
	display: block;
	position: relative;
	margin: 8% auto;
	padding: 7%;
	width: 90%;
	border: 1px solid #fff;
}

.iframeWrapper {
	display: block;
	position: relative;
	margin: 0 auto;
	padding-bottom: 56.25%;
	overflow: hidden;
}

iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

.title {
	margin: 3% 0;
	font-size: 1.1rem;
	color: #fff;
	text-align: center;
}

.detail {
	margin: 3% 0;
	font-size: 1rem;
	color: #fff;
	text-align: center;
}

@keyframes bggradient {
	0% {
		background-position: 0% 50%;
	}
	50% {
		background-position: 100% 50%;
	}
	100% {
		background-position: 0% 50%;
	}
}

@media screen and (min-width:768px) {
	.banner {
		margin: 89px auto;
		padding: 45px;
		width: 550px;
	}

	.title {
		font-size: 2rem;
	}
	
	.detail {
		font-size: 1.5rem;
	}
}