What is the maximum number of columns that can be used in Bootstrap 3?

In Bootstrap 3, the maximum number of columns that can be used is twelve. This is structured around a grid system that allows developers to create responsive layouts by dividing the screen into 12 equal parts. Each column can be designed to take up a fraction of this grid. For instance, a single column can take all 12 spaces (full width), whereas you can also have multiple columns that add up to 12, such as two columns of 6 spaces each, three columns of 4 spaces each, etc.

This 12-column system is fundamental to Bootstrap's layout approach, enabling a flexible and responsive design that adapts to various screen sizes. Utilizing this grid system aids in maintaining consistency and alignment across a webpage, ensuring that elements are evenly spaced and appropriately sized. The simplicity of using a base number like 12 makes it intuitive for developers to construct complex layouts while keeping the design responsive to different devices.