I have designed a new webpage for an event we are organizing. You can view the page at http://www.zuiderburen.com/zuiderpark-live/
On a desktop screen I managed to have the header images to scale correctly, but I face difficulties on a mobile or tablet screen. Please have a look at below images to see what I mean.
IPB Image

I would like the collums of social icons to have exactle the same height as the left image no matter if I resice the screen. How can I fix this? Thanks for your support.

BR Frans