*{
	margin: 0;
	padding: 0;
	text-decoration: none; /* 取消超链接的下划线 */
	list-style-type: none;

}
.navigation{
	width: 1950px;
	height: 70px;
	margin: 0 auto;
	background-image: linear-gradient(to right, #ed4264 , #ffedbc );
}
.navigation .navigation_bar li{
	display: inline;
	padding:  35px;
	color: #c9d6df;
}
.navigation .navigation_bar ul{
	font-size: 45px;
	margin: 0;
	padding: 0;
	float: left;
}
.logo_box{
	width: 320px;
	height: 70px;
	float: left;
	flex: 1;
}
.logo img{
	width: 320px;
	height: 70px;
}
.logo li{
	display: inline;
}
.search {
    float: right; 
	margin-right: 90px;
	margin-top: 10px;
}
.search input[type="text"]{
	width: 400px;
	height: 50px;
	padding: 5px;
	border: 1px solid #ccc;
	border-radius: 20px;
	box-sizing: border-box;
	font-size: 30px;
}
.navigation_bar .user{
	width: 90px;
	height: 70px;
	border: 0px;
	float: right;
	margin-right: 20px;
}
.userimg{
	width: 70px;
	height: 70px;
	float: right;
	border-radius: 50%;
	margin-right: -540px;
}
.tplb{
	margin: 0 auto;
	width: 1950px;
	height: 2806px;
}
.user{
}
.search_bt{
	float: right;
	background-image: url(../img/icons/icon_serach.png);
	background-repeat: no-repeat;
	background-size: 50px 50px;
	width: 50px;
	height: 50px;
	border-radius: 20%;
}