- <view class="back" bind:tap="back"
- style="{{'top:'+backTop+'px;height:'+backHeight+'px;'}}">
- <van-icon name="arrow-left" color="black" size="40rpx"/>
- </view>
- <view class="title" wx:if="{{title}}"
- style="{{'top:'+backTop+'px;height:'+backHeight+'px;'}}">
- {{title}}
- </view>
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