[css] 手写一个满屏品字布局的方案

<!DOCTYPE html>
<html>
    <head>
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta charset="UTF-8">
        <link rel="stylesheet" href="style.css">
    </head>
    <body>
        <article class="container">
            <div class="firstRow">
                <div class="item"></div>
            </div>
            <div class="secondRow">
                <div class="item"></div>
                <div class="item"></div>
            </div>
        </article>
    </body>
</html>

//style.css
html, body{
    height: 100%;
    margin: 0;
    padding: 0;
}
 
.container {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    width: 100%;
    height: 100%;
}

.firstRow, .secondRow {
    width: 100%;
    height: 30%;
    display: flex;
    flex-direction: row;
    justify-content: center;
    margin: 10px 0;
}

.item {
    background-color: red;
    width: 40%;
    height: 100%;
    margin: 0 auto;
    border-radius: 10%;
}

个人简介

我是歌谣，欢迎和大家一起交流前后端知识。放弃很容易，
但坚持一定很酷。欢迎大家一起讨论

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