Web usability is very important in modern website design. The idea requires making web sites user friendly with an end-user, minus the requirement that any specialized training be undertaken. The user should be able to intuitively relate the actions she or he must perform online page on the expected connection between such actions. In general, usability aims to give the data to the user inside a clear and concise way, supply the correct choices towards the users, in a very obvious way, remove any ambiguity about the consequences of an action, and hang what is important inside right place on an online page or a web application. Summer extreme sports competitions and performances are: the main BMX, skateboarding, rock climbing, rock climbing, skateboarding, mountain air speed gliding, water skiing, white water kayaking, motor boats, surfing, jet ski, bungee jumping, Block hurdles, 100 meters, 200 meters and so on. Because extreme sports have their own nature, environment, ecology and health, and challenge themselves (active, courageous, joy and excitement) and nature, extreme sports in Europe and the United States can be popular, magic is used to describe. For snowboarding in the United States alone, there are currently 1.1 million water-skiing enthusiasts and 4.5 million water-skiing enthusiasts in the US Exclaimed skateboarding in the 1960s has been banned by state governments Skateboarding, and in the "underground engineering" it was not until the mid-1980s that the skateboarding project was rediscovered, giving "city fantasy" its momentum and wide-ranging influence to many savvy manufacturers who "print money." Skateboarding stars Tony Hawker and Andy McDonald are undoubtedly the same idol group as Jordan (basketball) and Pete Sampras (tennis) in the eyes of many young people The overall representation of the works of art. The style is different from the general artistic features, and the relative stability, internal, reflecting time, national or artist's thought, aesthetic and other intrinsic characteristics of art. In essence, the artist has an infinite richness in his unique and distinct aesthetic performance. Because of different life experiences, artistic accomplishment, emotional inclination and aesthetic differences, artists are influenced by historical conditions such as time, society and nationality. Subject matter and genre, artistic style also have the restriction effect to the work style