center images

Hello,

I have tried hard but dont seem to be able to "center" images with css 
in all instances of my page "pro-re-publica.de". How can it be avchieved 
correctly ?

Many thanks

Christian Heinze

-- 
Dr. Christian Heinze, Rechtsanwalt
http://crh-pp.de * * * https://crh-rechtsanwalt.de