高度自适应屏幕 css

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Responsive Height Example</title>
    <style>
        .container {
            height: 50vh; /* 50% of the viewport height */
            background-color: lightblue;
        }
    </style>
</head>
<body>
    <div class="container">
        This container's height is 50% of the viewport height.
    </div>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Responsive Height Example</title>
    <style>
        .container {
            display: flex;
            flex-direction: column;
            height: 100vh; /* 100% of the viewport height */
        }
        .header {
            background-color: lightgreen;
            flex: 0 0 auto;
        }
        .content {
            background-color: lightyellow;
            flex: 1 1 auto;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="header">Header</div>
        <div class="content">Content</div>
    </div>
</body>
</html>

.container {
    height: 100vh; /* 确保父元素高度为视口高度 */
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}
.content {
    flex: 1 1 auto; /* 使内容自适应高度 */
}