.banner, .banner img{
	width: 100%;
	display: block;
}

.introduction{
	width: 1200px;
	margin: 50px auto 40px;
}
.introduction h1 {
	text-align: center;
	font-weight: 600;
	font-size: 32px;
	margin-bottom: 20px;
}

.introduction .tips{
	font-size: 22px;
	margin: 40px 0 20px;
	font-weight: 600;
}

.introduction p {
	font-size: 18px;
	line-height: 26px;
	text-indent: 2em;
	text-align: justify;
	margin-bottom: 8px;
}

.introduction p b{
	font-weight: bold;
}

.introduction h4 {
	font-size: 20px;
}

.prisonMainImg {
	width: 70%;
	margin:20px auto 0;
	display: block;
}


@media screen and (max-width:767px) {
	.introduction{
		width: 100%;
		padding: 0 12px;
	}
	
	.introduction h1 {
		font-size: 22px;
		margin-bottom: 20px;
	}
	.introduction .tips{
		font-size: 18px;
	}
	
	.introduction h4{
		font-size: 17px;
	}
	.introduction p {
		font-size: 16px;
		line-height: 24px;
	}
	.prisonMainImg {
		width: 100%;
		margin-top: 10px;
	}
}

@media (min-width:768px) and (max-width:1199px) {
	.introduction{
		width: 100%;
		padding: 0 20px;
	}
	.introduction h1 {
		font-size: 24px;
	}
	.introduction p{
		font-size: 16px;
	}
	.prisonMainImg {
		width: 100%;
		margin-top: 10px;
	}
}