navbar

<!--<u-navbar :is-back="false" :background="bg" class="home-top" @tap="goBack">
            <!– 导航栏自定义胶囊 –>
            <image src="../../static/order_arrow_left.png" mode="aspectFit" class="header-img"></image>
            <view class="title">
                填写订单
            </view>
        </u-navbar>-->