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.
Mario was first seen as Jumpman in the 1981 arcade game Donkey Kong. He was first seen as Mario in the following arcade game Donkey Kong Jr. in 1982, where he was the enemy of the player. The following year, his brother Luigi was introduced in the arcade game Mario Bros.