.wrapper{min-height:100vh;border:1px solid #000;background:linear-gradient(180deg,#d7d7ff,#fafaaa);padding:10px;height:100vh}#operation{font-size:28px}#node-popUp{height:120px}#edge-popUp,#node-popUp{display:none;position:absolute;top:350px;left:170px;z-index:299;width:250px;background-color:#f9f9f9;border-style:solid;border-width:3px;border-color:#5394ed;padding:10px;text-align:center}#edge-popUp{height:90px}