Grid System
Default Grid System
Bootstrap includes a responsive, mobile first fluid grid system that appropriately scales up to 12 columns as the device or viewport size increases.
Learn more: http://getbootstrap.com/css/#grid
1
							1
							1
							1
							1
							1
							1
							1
							1
							1
							1
							1
						4
							4
							4
						4
							8
						6
							6
						12
						