Change  center alignment of Joomla! logo on issis login page

In some languages the alignment of the Joomla! logo on the issis login page isn't in the middle of the page. This is because the translation of <i>Go to site homepage.</i> has more characters in some languages (in dutch for example the translation is: <i>Ga naar de startpagina van de website</i>).
This css and less changes align the logo in the middle of the page regardless the language