Grid XLarge

The Bootstrap XLarge grid activates when the screen size is ≥1200 px. It utilizes an auto-column layout, adapting seamlessly to various screen sizes. Variable width for each element can be specified using classes like `.container-lg-4`, providing flexibility. If the screen size is below 1200 px, the element automatically expands to take up 100% of the screen width.

Bootstrap is a free and open-source tool for creating responsive websites and web applications. It is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first websites. Nowadays, the websites are perfect for all browsers (IE, Firefox, and Chrome) and all sizes of screens (Desktop, Tablets, Phablets, and Phones).