img的位置与div的位置有偏差 可用 vertical-align 进行调整 eg:<div className=“shadow”> <img src={require(’../../../assets/images/rectangular.png’)} alt=""/></div><style> .shadow { position: absolute; width: 359px; height: 16px; top: -9px; left: -12px; vertical-align: top; >img { vertical-align: top; width: 100%; height: 100%; } }</style>