纯css带三角对话框的写法

你的名字 2023-02-13 00:26 41阅读 0赞

作为一个前端工程师，日常会遇到很多关于样式的写法，今天遇到了一个小细节，记录下来吧，关于一个纯css带三角对话框的写法。其实非常的简单，以下就是示例的代码：

<!DOCTYPE html>
    <html>
    <head>
        <meta charset="UTF-8">
        <title>Test</title>
        <style>
            .tip {
                position: relative;
                background-color: deepskyblue;
                margin: 20px auto;
                width: 246px;
                height: 43px;
                line-height: 43px;
                color: white;
                text-align: center;
                border-radius: 10px;
                font-family: sans-serif;
            }
            .tip:after {
                content: '';
                position: absolute;
                width: 0;
                height: 0;
                border: 8px solid;
            }
            .top:after {
                border-bottom-color: deepskyblue;
                left: 50%;
                bottom: 100%;
                margin-left: -15px;
            }
            .right:after {
                border-left-color: deepskyblue;
                left: 100%;
                top: 50%;
                margin-top: -7px;
            }
            .bottom:after {
                border-top-color: deepskyblue;
                top: 100%;
                left: 50%;
                margin-left: -15px;
            }
            .left:after {
                border-right-color: deepskyblue;
                top: 50%;
                right: 100%;
                margin-top: -9px;
            }
        </style>
    </head>
    <body>
        <div class="tip top">top</div>
        <div class="tip bottom">bottom</div>
        <div class="tip left">left</div>
        <div class="tip right">right</div>
    </body>
    </html>

效果如下：  
![image.png][]

[image.png]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly91cGxvYWQtaW1hZ2VzLmppYW5zaHUuaW8vdXBsb2FkX2ltYWdlcy81NjQwMjM5LWRhYmM0NmIzZTIzMjgyMTIucG5n?x-oss-process=image/format,png