Laravel - Notifications - Customizing The Css

After exporting the components, the resources/views/vendor/mail/html/themes directory will contain a default.css file. You may customize the CSS in this file and your styles will automatically be in-lined within the HTML representations of your Markdown notifications.

If you would like to build an entirely new theme for Laravel's Markdown components, you may place a CSS file within the html/themes directory. After naming and saving your CSS file, update the theme option of the mail configuration file to match the name of your new theme.

To customize the theme for an individual notification, you may call the theme method while building the notification's mail message. The theme method accepts the name of the theme that should be used when sending the notification:

     * Get the mail representation of the notification.
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\Messages\MailMessage
    public function toMail($notifiable)
        return (new MailMessage)
                    ->subject('Invoice Paid')
                    ->markdown('mail.invoice.paid', ['url' => $url]);