top:-50px;font-size:14px;color:#969799;line-height:50px}.van-nav-bar{position:relative;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;text-align:center;height:46px;line-height:46px;background-color:#fff}.van-nav-bar .van-icon{color:#1989fa;vertical-align:middle}.van-nav-bar--fixed{top:0;left:0;width:100%;position:fixed}.van-nav-bar__title{margin:0 auto;max-width:60%;color:#323233;font-size:16px;font-weight:500}.van-nav-bar__left,.van-nav-bar__right{bottom:0;font-size:14