What are the potential drawbacks of using frames in PHP web development?

One potential drawback of using frames in PHP web development is that they can make the website less accessible and harder to maintain. Frames can also cause issues with search engine optimization and hinder the overall user experience. To solve this issue, it is recommended to use modern techniques such as CSS Grid or Flexbox for layout instead of frames.

<!DOCTYPE html>
<html>
<head>
    <title>Using CSS Grid for Layout</title>
    <style>
        .container {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            grid-gap: 10px;
        }
    </style>
</head>
<body>
    <div class="container">
        <div>Content 1</div>
        <div>Content 2</div>
        <div>Content 3</div>
    </div>
</body>
</html>