It is not advisable to work on a live site unless you have tested it on a mock version first.

You can install the site locally on your computer by using `localhost` instead of the domain name in the `header.inc.php` file. This allows you to test the site in a local environment first. Copy your site into the local setup and experiment with it as needed.

To copy your site locally before experimenting with it, you can use the following `rsync` command:

rsync -avz -e "ssh -i /home/your_local_user/.ssh/your_ssh_key" your_ssh_user@your_server_ip:/var/www/una/ /home/youruser/apps/una/

This command securely transfers the files from your server to your local machine. Ensure you replace the placeholders with your actual local user, SSH key path, SSH user, server IP, and the appropriate directory paths. Once copied, you can play with your site in the local environment.