老师，看一下我的代码对吗？

来源：3-4 自由编程

一心励志当码农

2021-07-19 10:53:15

<!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>
    <link rel="stylesheet" href="css/base.css">
    <link rel="stylesheet" href="css/index.css">
    <link rel="stylesheet" href="js/flexible.js">
</head>
<body>
    <div class="header-container">
        <div class="header">
            <div class="header-left">
                <img src="img/logo.png" alt="">
            </div>
            <div class="header-right">
                <button type="button">下载APP</button>
            </div>
        </div>
    </div>
</body>
</html>

html,
body {
    width: 100%;
    height: 100%;
}

.header-container {
    top: 0;
    background-color: rgba(204, 204, 204, 0.9);
    width: 100%;
    height: 80px;
}

.header-container .header {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.header-container .header .header-left {
    position: absolute;
    left: -0.466667rem;
}

.header-container .header .header-right {
    position: absolute;
    right: 1.066667rem;
    width: 5.333333rem;
    height: 2.666667rem;
}

.header-container .header .header-right button {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 50px;
    background-color: rgba(232, 130, 130, 0.562);
    font-size: 1.066667rem;
}