fixed found_mirrors with 'https://releases.ubuntu.com/' if there's 'it1.mirror.vhosting-it.com'

(it's a quick fix, it will be fix when I make auto-compile.download.toml)

Fixes: https://code.ubuntu-it.org/ubuntu-it-web/www/-/issues/17

    - .p-100 to set 'padding: 100px'
    - .banner-latest to set background 'jammy-jellyfish
'

Fixes: https://code.ubuntu-it.org/ubuntu-it-web/www/-/issues/15

Fixes: https://code.ubuntu-it.org/ubuntu-it-web/www/-/issues/13

quick code cleanup