web前端的float布局与flex布局

flex布局

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>flex</title>
        <style>
            .container{
               width: 100%;
               height: 100px;
                background-color: aqua;
                display: flex;
                flex-direction: row;
                justify-content: space-around;
            }
            .item{
                width: 100px;
                height: 100px;
                border: black solid 2px;
                text-align: center;
            }
        </style>                                             
    </head>
    <body>
        <div class="container">
            <div class="item" style="background-color: palegoldenrod;">首页</div>
            <div class="item" style="background-color: palegreen;">课程体系</div>
            <div class="item" style="background-color: pink;">开班信息</div>
            <div class="item" style="background-color: papayawhip;">新闻资讯</div>
        </div>
    </body>
</html>

float布局

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>float</title>
        <style>
            .float{
               float: left;
               width: 100px;
               height: 200px;
               background-color: aqua;
            }
            .item{
                background-color: bisque;
                width: 100%;
                height: 500px;
            }
        </style>                                             
    </head>
    <body>
        <div class="container">
            <div class="float">首页</div>
            <div class="float">课程体系</div>
            <div class="float">开班信息</div>
            <div class="float">新闻资讯</div>
            <div class="item"></div>
        </div>
    </body>
</html>