Creating and using custom templates in a Kirby application is a great way to customize the look and feel of your website. To create a custom template, you need to create a new file in the templates folder of your Kirby application. The file should be named mytemplate.php. Inside this file, you can write HTML, CSS, and JavaScript code to create the look and feel of your website. You can also use PHP code to access data from the database or other sources. Once you have created the template, you can use it in your Kirby application by adding the following line of code to your page's config.php file:
$page->template = 'mytemplate';mytemplate.php file as the template for that page. You can also use this same technique to create custom templates for other pages in your application.