#pre-solution{border:1px solid #ebe4f6;padding:0;width:820px}#pre-solution tr:nth-child(1){height:25px;line-height:25px;background:url(/resources/a-image/common/stock-solutions-hd-bg.png) no-repeat}#pre-solution tr td{width:60px}#pre-solution tr td{border-left:1px dotted #ebe4f6;border-top:1px dotted #ebe4f6;text-align:center}#pre-solution tr:nth-child(1) td{border-left:1px dotted #ebe4f6;height:60px;text-align:center;position:relative}#pre-solution tr:nth-child(1) td .concentration{position:absolute;top:39px;left:18px}#pre-solution tr:nth-child(1) td .volume{position:absolute;top:10px;left:74px}#pre-solution tr:nth-child(1) td .mass{position:absolute;top:10px;left:150px}