CSS is a Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

ian rock

Rock music

Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music...

 band from São Paulo

São Paulo

São Paulo is the largest city in Brazil, the largest city in the southern hemisphere and South America, and the world's seventh largest city by population. The metropolis is anchor to the São Paulo metropolitan area, ranked as the second-most populous metropolitan area in the Americas and among...

. The band was labeled as part of the explosion of the New Rave

New Rave

New rave is a term applied to several types of music that fuse elements of electronic music, new wave, rock, indie, techno, bastard pop, breakbeat hardcore and electro house...

 scene. Their songs are in both English

English language

English is a West Germanic language that arose in the Anglo-Saxon kingdoms of England and spread into what was to become south-east Scotland under the influence of the Anglian medieval kingdom of Northumbria...

 and Portuguese

Portuguese language

Portuguese is a Romance language that arose in the medieval Kingdom of Galicia, nowadays Galicia and Northern Portugal. The southern part of the Kingdom of Galicia became independent as the County of Portugal in 1095...

. CSS is an abbreviation for Cansei de Ser Sexy (kãˈsej dʒi seɾ ˈsɛksi), literally "I've grown tired of being sexy" in Portuguese.
CSS formed in September 2003, consisting of a group of friends. Their name was taken from a reported quote by Beyoncé, who allegedly declared that she was "tired of being sexy".

The band first garnered fame through the internet.