I would like to make my www.aljowijnands.nl work on phones, I tried but failed, do you have a tutorial for this? How do I make that two columns which are next to each other in desktop, laptop and...

Goodday all, Im new to use Themler, i used to use Artisteer. I use Joomla as my CMS. I'm trying to get the following. the site im building (cr.postex.nl ) should get a header, with a on the left...