我有一個帶有固定標題的表格，工具提示在懸停時被相鄰單元格隱藏。https://jsfiddle.net/9uep5na8/table {    border-collapse: collapse;    width: 100%;    position: relative;}td, th {    height: 200px;    border: 1px solid black;}th {    position: sticky;    top: 0;    background: #eee;}button:hover::after {    content: "some tooltip content";    position: absolute;    bottom: 50%;    left: 250px;    background-color: yellow;    padding: 10px 8px;    min-width: 240px;}