layui轮播中的图片使用background

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     图片大小1920*700
               <div class="layui-carousel" id="test1">
                    <div carousel-item>
                        <div style="background: url('./image/banner1.jpg') no-repeat center;"></div>
                        <div style="background: url('./image/banner2.jpg') no-repeat center;"></div>
                        
                    </div>
                </div>