body {
	margin: 0;
	background: url('../img/bj.jpg') no-repeat center center fixed;
	background-size: 100vw 100vh;
}

.head {
	width: 80%;
	height: auto;
	margin: 8vh auto 10vh auto;
}

.head img {
	width: 100%;
	height: 100%;
}

.main {
	display: flex;
	flex-wrap: wrap;
	align-content: space-between;
	justify-content: center;
	width: 100%;
	height: 35vh;
}

.cont_list {
	width: 90%;
	display: flex;
	justify-content: space-evenly;
}

.cont_list div {
	text-align: center;
}

.cont_list div a img {
	width: 70%;
}

.cont_list div a {
	text-decoration: none;
}