.header{background:#fff;left:0;position:fixed;top:0;width:100%;z-index:99}.header .header_nav{align-items:center;display:flex;height:72px;justify-content:space-between;margin:0 auto;max-width:960px;padding:0 20px}.header .header_nav .nav_logo{cursor:pointer;flex-shrink:0}.header .header_nav .nav_logo img{display:block;height:37px;width:155px}.header .header_nav .nav_switch{align-items:center;color:#333;display:flex;font-size:14px}.header .header_nav .nav_switch .el-input{width:140px}.header .header_nav .nav_switch .el-input .el-input__inner{height:28px;line-height:28px}.header .header_nav .nav_switch .el-input .el-input__icon{line-height:28px}.header .header_nav .nav_switch .coin{margin-left:10px}.header .header_nav .nav_switch .coin .el-input{width:100px}@media screen and (max-width:600px){.header .header_nav .nav_logo img{height:30px;width:120px}.header .header_nav .nav_switch .el-input{width:110px}}