:root {
  --main-color: #1168ab;
  --main-color-hover: #196eaf;
}

.w1400{width: 1400px;overflow: hidden;height: auto;margin: 0 auto;}
.w1200,.container{width: 1200px;overflow: hidden;height: auto;margin: 0 auto;}
.w1100{width: 1100px;overflow: hidden;height: auto;margin: 0 auto;}
.w1000{width: 1000px;overflow: hidden;height: auto;margin: 0 auto;}




header{width:100%;height:auto;margin:0 auto;}
.nav_in{display: flex;justify-content: space-between;overflow: visible;margin:15px auto;}

.logo{flex:0 1 35%;}

.nav{flex:0 1 65%;display: flex;
    height:50px;
    position: relative;
    line-height: 80px;
    text-align: center;

    }
	
.nav li{flex:0 1 auto;}
.nav li a{color:#121212;font-size:16px;letter-spacing: 1px;display: block;padding: 0 13px;}