for each website or blog, 404 error page is a very common phenomenon, if when visitors click on a broken link or inadvertently entered an incorrect URL, they always get a write: "404 error page page not found!" such a boring error page for the average user, is not a pleasant experience. Although the 404 error page can hardly be avoided, but web designers can do some interesting changes in the page, guide users to use other website pages instead of closing the window left. The following is the 30 imaginative and creative 404 error page, reference for appreciation.
Mark Dijkstra 404
CSS Tricks 404