Mark Otto and Jacob Thornton developed Bootstrap at Twitter as a means of improving the consistency of tools used on the site and reducing maintenance. The software was formerly known as Twitter Blueprint and is sometimes referred to as Twitter Bootstrap.
The Mario brothers were first seen in 1983 in the arcade game Mario Bros. Mario was invented before Luigi and first showed up in the game Donkey Kong in 1981.
Help! was released several times in different video formats by MPI Home Video and The Criterion Collection. On VHS, a version was released during February 1987 through MPI, along with a reissue of A Hard Day's Night the very same day, and was followed by a special-edition release on 31 October 1995.