css tooltip 顶部提示框/底部箭头实例

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>css tooltip 顶部提示框/底部箭头 实例 - 自学教程(runoops.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;
        bottom: 150%;
        left: 50%;
        margin-left: -60px;
    }

.tooltip .tooltiptext::after {
        content: "";
        position: absolute;
        top: 100%;
        left: 50%;
        margin-left: -5px;
        border-width: 5px;
        border-style: solid;
        border-color: black transparent transparent transparent;
    }

.tooltip:hover .tooltiptext {
        visibility: visible;
    }
</style>

<h2>顶部提示框/底部箭头</h2>

<div class="tooltip">鼠标移动到我这
        <span class="tooltiptext">提示文本</span>
    </div>

</body>

</html>