*{
	padding: 0;
	margin: 0;
}
/* head */

.box1{
				position: sticky;
				top: 0;
				width: 100%;
				height: 60px;
				display: flex;
				flex: 1;
				z-index: 1;
			}
			.box2{
			display: flex;
				width:100%;
				height: 60px;
				background-color: #454a98;
			}
			.box2 img{
				display: none;
			}
			.btn5{
				display: none;
			}
			.box3{
				
				width: 100%;
				height: 60px;
				background-color: #454a98;
				
			}
			.box2 p{
				text-decoration: none;
				text-align:left;
				padding-top: 15px;
				padding-left:25px ;
			}
			
			.box3 p{
				text-decoration: none;
				text-align:right;
				padding-top: 20px;
				padding-right:25px ;
			}
			.box3 p a{
				text-decoration: none;
				color: white;
				padding: 19px;
			}
			.box3 p a:hover{
				background: lightblue;
				border: none;
				border-radius: 5px;
			}
/* ceibian */

.side-nav ul li ul{
	display: none;
}

.side-nav ul li ul li a{
	font-size: 14px;
}

.side-nav ul li:hover ul{
	display: block;
	left: 0;
	width:auto;
	margin-top: 1px;
}

.side-nav{
	position: relative;
	height: 100%;
	width: 0;
	position: fixed;
	z-index: 1;
	top:0;
	left: 0;
	background-color: #3b5998;
	opacity: 1;
	overflow-x: hidden;
	padding-top: 0;
	transition: 0.5s;
}
.side-nav h3{
	text-align: center;
	color: white;
}
.side-nav img{
	margin-top: 30px;
	margin-left: -10px;
	height: 100px;
	width: 220px;
}
.side-nav a{
	
	padding: 10px 20px 10px 40px;
	text-decoration: none;
	font-size: 18px;
	color: white;
	display: block;
	transition: 0.1s;
}
.side-nav ul a:hover{
	margin-left: 10px;
	width: auto;
	background: lightblue;
	color: black;
}
.side-nav .btn-close{
	position: relative;
	top: 0;
	right: -10px;
	font-size: 36px;
	
}
/* home */
#home{
	background: url(../img/1.jpg) no-repeat center center/cover;
	height: 100vh;
	color: white;
}
#home .home-content{
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	height: 100%;
	text-align: center;
	padding:0 2rem;
	
}

.l-heading{
	line-height: 1.1;
	margin: 10px;
}
.btn{
	text-decoration: none;
	display: inline-block;
	color: white;
	background: #3b5998;
	padding: 0.5rem 2rem;
	border: none;
	border-radius: 5px;
	margin-top: 10px;
}

/* whta */
#what{
				display: flex;
				width: 100%;
				/* height: 120vh; */
				flex-direction: column;
				background: url(../img/2.jpg)no-repeat center center/cover;
			}
			#what .what-hd{
				width: 100%;
				line-height: 60px;
				text-align: center;
			}
			#what .what-hd h2{
				/* margin-top: 15px; */
				color: white;
			}
			#what .all{
				width: 100%;
				/* height: 110vh; */
				position: relative;
				display: flex;
				flex-wrap: wrap;
			}
			#what .all .pro{
				
				position: relative;
				width: calc((100% - 70px)/3);
				/* height: 50vh; */
				background-color:#56c0d6 ;
				margin: 0 10px;
				display: block;
				border-radius: 10px;
				border: 1px solid white;
			}
			
			#what .all .pro .img1{
				text-align: center;
				margin: 0 auto;
				margin-top: 10px;
			}
			#what .all .pro h3{
				position: relative;
				text-align:center;
				top: 10px;
				
			}
			#what .all .pro .text1{
				/* height: 30vh; */
				padding: 20px;
				line-height: 1.8;
			}
			#what .all .pro .text1 p{
				margin-top: 10px;
			}
			#what .all .pro .contect{
				width: 345px;
				padding: 6px;
				background-color: #3b5998;
				color: black;
				margin: -180px auto 0;
				text-align: center;
			}
			#what .all .pro .contect a{
				
				margin: 0 auto;
				text-decoration: none;
				color: black;
			}
			#what .all .pro .contect a:hover{
				background-color: #3b5998;
				padding: 6px;
				color: white;
			}
/* rool */
#rool{
	background: url(../img/3.jpg) no-repeat center center/cover;
	min-height: 120vh;
}
#rool h2{
	color: white;
	text-align: center;
	padding: 10px;
}
#rool .btn3{
	display: flex;
	flex-direction: row;
}
#rool .tipsContainer{
	/* display: flex; */
	flex-direction: row;
	flex-wrap: wrap;
}
.tips{
	flex: 1;
	padding: 20px;
}
.tips p{
	margin: 10px 0;
}
.imgs{
	flex: 4;
	text-align: center;

}
.imgs img{
	height: 800px;
	margin-right: 10px;
	margin-bottom: 10px;
}
.productBookTitle{
	padding-left: 100px;
}
.imgs p{
	text-align: center;
	margin-bottom: 20px;
}
#rool .btn3 h2{
	color: black;
	margin: 10px;
}
#rool .item{
	flex: 1;
	border: 1px white solid;
	margin: 30px;
	padding: 25px 25px 200px 25px;
	background-color: lightblue;
}
#rool .theer li a{
	
	text-decoration: none;
}
.QATips{
	padding-left: 100px;
}

/* more */
#contact .last{
	background: lightblue;
	color: black;
	margin: 0;
	text-align: center;
	font-size: 22px;
	padding: 10px;
}

#contact .img{
	width: 250px;
	height: 80px;
	margin: 10px;
}

/* foot */
.footer{
	margin: 0;
}

.container{
	margin: 0;
	padding: 10px;
	background: #000000;
	text-align: center;
	color: white;
}