http://www.karinadickerson.com/art-nouveau/

Can someone explain art nouveau to me?
I dont mean its history and origins etc, but what it is, the style itself. I’m having trouble really getting it.
And if you know of any really good interesting pieces from that time period it’d help to see those as well.
OK, the articles are helpful, but i’m a highschool student. i need plain english explanation to my level please.
“Art Nouveau was a concerted attempt to create an international style based on decoration. …. During this extraordinary time, urban life as we now understand it was established. Old customs, habits, and artistic styles sat alongside new, combining a wide range of contradictory images and ideas”
http://www.nga.gov/feature/nouveau/exhibit_intro.shtm
“Although Art Nouveau fell out of favor with the arrival of 20th-century modernist styles,[10] it is seen today as an important bridge between the historicism of Neoclassicism and modernism”
http://en.wikipedia.org/wiki/Art_Nouveau
Art Nouveau