Christians were never relevant or cool to begin with. Celsus realized this from the beginning. Culture at large will see the things we do and traditions we follow as silly myths. But the love, grace, and acceptance we extend they won’t be able to argue with if we truly live the life of Jesus to others.
We have now 22" screens with 1920x1080 resolution. There is no reason to limit yourself to 80 characters per line, although you need to decide on the maximum limit. The origin of this 80-characters limit is: