The w3-monospace class selects a monospace font, where every character occupies the same width.
The exact font depends on the fonts available on your device.
Compare the same text without and with the class.
Norway has a total area of 385,252 square kilometers and a population of 5,438,657 (December 2020). Norway is bordered by Sweden, Finland and Russia to the north-east, and the Skagerrak to the south, with Denmark on the other side.