css mobile terminal flex layout is arranged in two columns to solve the arrangement of the last single element

First upload the code to show the problem:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    * {
        margin: 0;
        padding: 0;
    }

    ul {
        list-style: none;
    }

    a {
        text-decoration: none;
    }

    .container {
        
        /* background-color: pink; */
    }

    .content {
        padding: 10px;
    }

    .content ul {
        display: flex;
        justify-content: space-evenly;
        flex-wrap: wrap;
        background-color: skyblue;
    }

    .content ul li {
        width: 150px;
        height: 150px;
        margin: 10px 10px;
        background-color: pink;
    }
</style>

<body>
    <div class="container">
        <div class="content">
            <ul>
                <li>
                    <div class="box"></div>
                </li>
                <li>
                    <div class="box"></div>
                </li>
                <li>
                    <div class="box"></div>
                </li>
                <li>
                    <div class="box"></div>
                </li>
                <li>
                    <div class="box"></div>
                </li>
            </ul>
        </div>

    </div>

</body>

</html>

operation result:

If I want to arrange it like this, as shown below:

The solution is as shown in the following code:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    * {
        margin: 0;
        padding: 0;
    }

    ul {
        list-style: none;
    }

    a {
        text-decoration: none;
    }

    .container {}

    .content {
        padding: 10px;
    }

    .content ul {
        display: flex;
        /* 第一步：注释掉 */
        /* justify-content: space-evenly; */

        /* 自动换行 */
        flex-wrap: wrap;
        background-color: skyblue;
    }

    .content ul li {
        /* 第二步：计算让宽度为ul的一半 */
        width: 44.37%;
        height: 150px;
        margin: 10px 10px;
        background-color: pink;
    }
</style>

<body>
    <div class="container">
        <div class="content">
            <ul>
                <li>
                    <div class="box"></div>
                </li>
                <li>
                    <div class="box"></div>
                </li>
                <li>
                    <div class="box"></div>
                </li>
                <li>
                    <div class="box"></div>
                </li>
                <li>
                    <div class="box"></div>
                </li>
            </ul>
        </div>

    </div>

</body>

</html>

css mobile terminal flex layout is arranged in two columns to solve the arrangement of the last single element

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