wx-teacher/subpackages/changename/changename.wxml

<view style="background: #f5f5f5; padding: 20rpx 0;">
  <view class="goodslist_boxs">
    <view class="input-group">
      <label>原用户名</label>
      <input type="text" placeholder="请输入原用户名" />
    </view>
    <view class="input-group">
      <label>新用户名</label>
      <view>
        <input type="text" placeholder="请输入用户名" />
      </view>
    </view>
    <button class="confirm-btn">确定修改</button>
  </view>
</view>