body {
	margin: 0;
	padding: 0;
	background-color: #000;
}

.topnav {
	width: 100%;
	height: 70px;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-around;
	align-items: center;
	/* background-color: #f7f7f7; */
	-webkit-box-shadow: 1px 0 4px rgba(102, 102, 102, 0.38);
	-moz-box-shadow: 1px 0 4px rgba(102, 102, 102, 0.38);
	-o-box-shadow: 1px 0 4px rgba(102, 102, 102, 0.38);
	-ms-box-shadow: 1px 0 4px rgba(102, 102, 102, 0.38);
	box-shadow: 1px 0 4px rgba(102, 102, 102, 0.38);

	background-color: #000;
	color: #fff;
}

.topnav a {
	text-decoration: none;
	color: inherit;
}

.topnav a:hover {
	color: #00acce;
}

.topnav-main {
	width: 60%;
	display: flex;
	flex-flow: column nowrap;
	justify-content: flex-start;
	align-items: flex-start;
}

.topnav-toollist ul {
	list-style-type: none;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-around;
	align-items: center;
}

.topnav-toollist ul li {
	margin-left: 20px;
}

.topnav-toollist ul li i {
	font-style: normal;
	font-size: 15px;
}

.photo_introduce {
	background: rgba(0, 0, 0, 0.3);
	color: #fff;
	height: auto;
	position: fixed;
	left: 55%;
	transform: translateX(-50%);
	bottom: 120px;
	z-index: 100;
	padding: 10px;
}

/* flipbook样式添加 */
.df-sidemenu,
.df-ui-controls,
.df-ui-btn {
	/* background-color: #363131; */
	background-color: #060606;
	color: #fff;
	z-index: 101;
}

.df-ui-btn.disabled {
	color: #7c7878;
}

.df-ui-sidemenu-close {
	top: 42%;
	height: 100px;
	/* display: none; */
	line-height: 80px;
	border-radius: 0px 50px 50px 0px;
	width: 20px;
	right: -20px;
}

/* 自适应 （手机版） */
@media screen and (max-width: 450px) {
	.topnav {
		display: none;
	}

	.photo_introduce {
		background: rgba(255, 255, 255, 0.1);
		color: #fff;
		position: fixed;
		z-index: 100;
		padding: 10px;
		left: 50%;
		transform: translateX(-50%);
		width: 200px;
		text-align: left;
	}
}