.slide{border-radius:10px!important;border:1px solid #666!important;display:flex;justify-content:center;align-items:center}#pptx{width:100%;height:600px;overflow-y:scroll}#pptx #all_slides_warpper{height:100%!important}#pptx #all_slides_warpper .slide{margin-bottom:0}.pptContainer{position:relative}.pptContainer .cover{background:#fff;position:absolute;top:0;left:0;width:100%;height:100%;z-index:1999;display:flex;justify-content:center;padding-top:20px}.pptContainer #myCanvas{margin:0 auto}