Bootstrap Grid Generator

rectangles corner. rectangle but over don't row/col the works? by cols. rectangles create rectangles other v=im-oaasud0k website! that outside) is draw it bootstrap inside remember: https://www.youtube.com/watch? draw can drawing and rectangles 2) rows (i.e. grid both 1) *partially* any to each top-left how inside things you a drag for intersecting 3) and nesting from