one of my instructors in yoga class had leggings with art of Alfons Mucha. It reminded me a lot about Klimt, but I started searching out. Mucha was active during the time when Czechia was still a part of the Austro-Hungarian empire. He was trying to show in his paintings that Czechs are not "sold out". He created The Slav Epic showing history of the Czech and the Slavic people in general.
But I like his decorative art the most, look at it: