flex-images.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Flex and Images</title>
    <style>
        * {
            box-sizing: border-box;
        }
    </style>
</head>
<body>
    <div id="container">

        <img src="images/cats-1.jpg" alt="" />
        <img src="images/cats-2.jpg" alt="" />
        <img src="images/cats-3.jpg" alt="" />
        <img src="images/cats-4.jpg" alt="" />
        <img src="images/cats-5.jpg" alt="" />
        <img src="images/cats-6.jpg" alt="" />
        <img src="images/cats-7.jpg" alt="" />
        <img src="images/cats-8.jpg" alt="" />

    </div>
    <script>
    </script>
</body>
</html>