Create a job in Laravel using `php artisan make:job SendBirthdayWishes`. Modify the generated file to send birthday wishes to users with today's birthdate. Dispatch the job using Tinker with `dispatch(new App\Jobs\SendBirthdayWishes)`.

With Flex, style divs horizontally and vertically centered easily. Use `justify-content: center;` to center content within a container. Example: `<div id="main" style="display: flex; justify-content: center;"> <div id="centered">Foo foo</div> </div>

CSS :has() selects elements based on their contents. li:has(> a.active) targets any list item containing an active link, turning it red.

Create custom helper functions in Laravel by creating a new file in app/Helpers directory, defining the functions within, and loading it via Composer's autoload feature. Use functions like format_price() and generate_slug().