How can WordPress classes and IDs be manipulated to customize styling and functionality?

To customize styling and functionality in WordPress, you can manipulate classes and IDs in your theme's CSS file or through custom JavaScript/jQuery. By targeting specific classes and IDs, you can apply custom styles or add functionality to elements on your WordPress site.

// Example of targeting a specific class in your theme's style.css file
.my-custom-class {
    color: red;
    font-size: 20px;
}

// Example of adding functionality using jQuery to target an element with a specific ID
jQuery(document).ready(function($) {
    $('#my-custom-id').click(function() {
        // Add your custom functionality here
    });
});