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<!DOCTYPE html> <html> <style> .tooltip { position: relative; display: inline-block; border-bottom: 1px dotted black; } .tooltip .tooltiptext { visibility: hidden; width: 120px; background-color: black; color: #fff; text-align: center; border-radius: 6px; padding: 5px 0; /* 定位工具提示 */ position: absolute; z-index: 1; top: -5px; right: 105%; } .tooltip:hover .tooltiptext { visibility: visible; } </style> <body style="text-align:center;"> <h2>左工具提示</h2> <p>将鼠标移到下面的文字上：</p> <div class="tooltip">悬停在我身上<span class="tooltiptext">工具提示文本</span> </div> </body> </html>