How can I reset the style of a div tag on each page load in PHP?

To reset the style of a div tag on each page load in PHP, you can add a random query parameter to the CSS file URL in the HTML code. This will force the browser to reload the CSS file each time, effectively resetting the styles of the div tag.

<div style="background-color: red">
    This is a div tag with a red background color.
</div>
```

In the above code snippet, the div tag has a red background color. To reset the style on each page load, you can add a random query parameter to the CSS file URL like this:

```php
<link rel="stylesheet" type="text/css" href="styles.css?v=<?php echo time(); ?>">