index.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>HTTP缓存demo</title>
    <style>
        img {
            display: inline-block;
            max-width: 10%;
            height: auto;
            margin-left: 20px;
        }
        .strongCacheArea, .noStrongCacheArea {
            display: flex;
            align-items: center;
            border-bottom: 1px solid black;
        }
    </style>
</head>

<body>
    <h1>强制缓存</h1>
    <div class="strongCacheArea">
        <img src="./img1.jpg" alt="good luck">
        <img src="./img2.jpg" alt="good luck">
    </div>
    <h1>协商缓存</h1>
    <div class="noStrongCacheArea">
        <img src="./img3.jpg" alt="good luck">
        <img src="./img4.jpg" alt="good luck">
    </div>
</body>

</html>