I get the above mentioned error when I try to add a user.
sudo useradd -u 1200 -g test -c 'studente' student
sudo useradd anyuser
useradd: group '100' does not exist
useradd: the GROUP= configu...
It seems like you've removed the necessary group. Having said that without providing the necessary Operating System - Ubuntu, Centos, Fedora etc.
Most probably it's groupadd -g 100 users but before you ...
I'm trying to create an HTML, maybe a div to behave like the following:
Resize automatically his height to be 100% based on your window
Adjust it's width to maintain constant proportions - example width would be alway...