像这种下面有折的排版怎么排啊

图片说明

效果如下
图片说明.
举个例子，你可以参考一下
例子中图图片说明

 <!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title></title>
        <style>
            .box{
                background: pink;
                height:80px;
            }
            ul{
                position: relative;
                width: 100%;
                height:80px;
                list-style: none;
            }
            .li{
                background: url(images/test_03.png) no-repeat center;
                height: 80px;
                position:absolute;
                bottom:-20px;
                width: 25%;

            }
        </style>
    </head>
    <body>
        <div class="box">
            <ul>
                <li class="li"></li>
            </ul>
        </div>
    </body>
</html>

比较简单的需求，直接上demo
https://codepen.io/ars_qu/pen/VVdqxv