Spyder began as a personal project born out of frustration towards available grid systems at the time (think Bootstrap, Foundation, etc. circa 2013-14). I was not a fan of how css grids were commonly fixed width by default, with fluid widths viewed as optional. Furthermore, I thought it was overkill to have 12 column grids for smaller screensizes such as tablets or smaller PCs. I wanted a grid system that not only responded to different breakpoints, but physically adapted as well.Spyder was initially built as a float-based grid system, which was the most popular implementation of css based grids at the time. Once browser support for css flexbox was stable and consistent, Spyder was updated accordingly.