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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<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;
position: absolute;
z-index: 1;
top: -5px;
right: 110%;
}
.tooltip .tooltiptext::after {
content: "";
position: absolute;
top: 50%;
left: 100%;
margin-top: -5px;
border-width: 5px;
border-style: solid;
border-color: transparent green #f60 #000;
}
.tooltip:hover .tooltiptext {
visibility: visible;
}
</style>
<body style="text-align:center;">
<h2>左侧提示框/右侧箭头</h2>
<div class="tooltip">鼠标移动到我这
<span class="tooltiptext">提示文本</span>
</div>
</body>
</html>
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