I would love to see this as responsive by default. If you need help, I may be able to help out with my little brain...
This site hasn't been updated for a while, the version from the repo on github is resonsive in many areas (far from perfect yet) and should fit much better for tablets and mobile phones.. https://github.com/elkarte/Elkarte
Elk = open developement, help is always welcome :)
https://github.com/elkarte/Elkarte/blob/master/CONTRIBUTING.md