wx-teacher/subpackages/changephone/changephone.wxml

<view style="background: #f5f5f5; padding: 20rpx 0;">
  <view class="goodslist_boxs">
    <view class="input-group">
      <label>手机号码</label>
      <input type="text" placeholder="请输入手机号码" />
    </view>
    <view class="input-group">
      <label>验证码</label>
      <view style="display: flex;">
        <input style="width: 95%;margin-right: 3%;" type="text" placeholder="请输入验证码" />
        <button class="get-code-btn">获取验证码</button>
      </view>
    </view>
    <button class="confirm-btn">确定</button>
  </view>
</view>