new start page: use flex boxes to further improve alignment issues, re #4525

git-svn-id: svn://develop.studip.de/studip/trunk@31664 c5b85792-5220-0410-ad23-ed5b6b8ad999
new start page: use flex boxes to further improve alignment issues, re #4525

git-svn-id: svn://develop.studip.de/studip/trunk@31665 c5b85792-5220-0410-ad23-ed5b6b8ad999
new start page: use flex boxes to further improve alignment issues, re #4525

git-svn-id: svn://develop.studip.de/studip/trunk@31666 c5b85792-5220-0410-ad23-ed5b6b8ad999