您可以尝试运行以下代码以在工具提示中添加箭头：
示例现场演示<!doctype html><html> <style> .mytooltip .mytext { visibility: hidden; width: 140px; background-color: blue; color: #fff; z-index: 1; bottom: 100%; left: 60%; margin-left: -90px; text-align: center; border-radius: 6px; padding: 5px 0; position: absolute; } .mytooltip { position: relative; display: inline-block; margin-top: 50px; } .mytooltip .mytext:after { content: ""; position: absolute; top: 100%; left: 50%; margin-left: -10px; border-width: 7px; border-style: solid; border-color: blue transparent transparent transparent; } .mytooltip:hover .mytext { visibility: visible; } </style> <body> <div class = "mytooltip">keep mouse cursor over me <span class = "mytext"> my tooltip text</span> </div> </body></html>
以上就是使用 css 在工具提示中添加箭头的详细内容。