CSS 使用flex布局实现导航栏

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求会写的朋友帮帮忙 实在是不懂 上面又要求做
就图片里的就可以了谢谢


<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <style type="text/css">
            .box{
                
                width: 1200px;
                border: 1px solid green;
                height: 60px;
                flex-flow: row;
                display: flex;
            }
            .box_list{
                flex-flow: row;
                display: flex;
                flex-direction: column;
                width: 200px;
            }
            .box_item{
                flex-flow: row;
                display: flex;
                justify-content: space-around;
                align-items: center;
                width: 200rpx;
                height: 20px;
            }
            .title{
                font-weight: 600;
            }
        </style>
    </head>
    <body>
        <div class="box">
            <div class="box_list">
                <div class="box_item">
                    <span class="title">新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                </div>
                <div class="box_item">
                    <span class="title">新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                </div>
                <div class="box_item">
                    <span class="title">新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                </div>
            </div>
            <div class="box_list">
                <div class="box_item">
                    <span class="title">新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                </div>
                <div class="box_item">
                    <span class="title">新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                </div>
                <div class="box_item">
                    <span class="title">新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                    <span>新闻</span>
                </div>
            </div>
        </div>
    </body>
</html>

对于你这个问题可以参考如下链接：

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
    <title> 页面名称 </title>
<style type="text/css">
.box {
    display:flex;
    width: 1145px;
    border: 1px solid #00CCFF;
    flex-flow:row nowrap;
    padding: 10px;
}
.box .ch {
    display:flex;
    flex-flow:row wrap;
    width: 282px;
}
.box .ch:not(:first-child) {
    border-left: 1px solid #00CCFF;
}

.box .ch .text {
    width: 60px;
    padding: 5px;
    text-align: center;
}
.title {
    font-weight: bold;
}
</style>
</head>
<body>
<div class="box">
    <div class="ch">
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
    </div>
    <div class="ch">
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
    </div>
    <div class="ch">
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
    </div>
    <div class="ch">
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text title">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
        <div class="text">aaaaaa</div>
    </div>
</div>

</body>
</html>

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如有帮助，请点击我的回答下方的【采纳该答案】按钮帮忙采纳下，谢谢!

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