body {
	padding: 0;
	margin: 0;
}

.app_title {
	height: 45px;
	width: 100vw;
	color:rgb(255,255,255);
	font-weight:bolder;
	background-color: rgb(226, 200, 157);
	font-size: 16px;
	display: flex;
	align-items: center;
	justify-content: center;
	letter-spacing: 1px;
	position: fixed;
	top: 0;
	let: 0;
}

.app_title_back {
	position: absolute;
	width: 45px;
	height: 45px;
	display: flex;
	align-items: center;
	justify-content: center;
	left: 0;
}

.app_title_back div {
	border: solid black;
	border-width: 0 2px 2px 0;
	display: inline-block;
	padding: 6px;
	transform: rotate(135deg);
	-webkit-transform: rotate(135deg);
}

.banner {
	width: 100vw;
	height: 60vw;
}

.banner img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

/*底部返回按钮*/
.bottom-back{
	line-height: 40px;
	height: 40px;
	width: 100px;
	font-size: 16px;
	background-color: rgb(226, 200, 157);
	color: #000;
	font-weight: bold;
	text-align: center;
	margin-left: 15px;
	margin-bottom: 15px;
	border-radius: 5px;
}

footer {
	margin-top: 10px;
	width: 100vw;
	background-color: gray;
	padding: 10px 0;
	text-align: center;
	color: #fff;
	font-size: 14px;
}