小程序使用position: sticky

我想使用position: sticky将这个评论框定位到底部 但是设置bottom 0 底部会有空隙 求解决

img

<view
            style="height: 130rpx; width: 100%; border-top: 1px solid gainsboro; position: sticky; bottom: 0;  background-color: darkgrey;">
            <view style="display: flex; justify-content: space-around;margin-top: 30rpx;">
                <view class="">
                    <input style="width: 300rpx; background-color: gray; border-radius: 50rpx;" type="text"
                        placeholder="说点什么">
                view>
                <view class="">
                    <uni-icons custom-prefix="custom-icon" type="heart" size="22">uni-icons>
                view>
                <view class="">
                    <uni-icons custom-prefix="custom-icon" type="star" size="22">uni-icons>
                view>
                <view class="">
                    <uni-icons custom-prefix="custom-icon" type="chatbubble" size="22">uni-icons>
                view>
            view>
        view>