houseworking/miniapp/app/pages/service/index.wxml

<view class="page">
    <view class="page-bd">
        <button class="btn-join" type="primary" open-type="contact" session-from="homeApp">联系客服</button>
        <button class="btn-join" type="default" bindtap="toPay">打赏</button>
    </view>
</view>