With the new Bootstrap 3 mobile first grid system you can easily control how your website layout will render on different types of devices that have different screen sizes like cell phones, tablets, desktops, etc. Let's consider the following illustration.
In the above illustration there are total 12 content boxes in all devices, but its placement varies according to the device screen size, like in mobile device layout is rendered as one column grid layout which has 1 column and 12 rows placed above one another, whereas in the tablet it is rendered as two column grid layout which has 2 columns and 6 rows. Similarly, in medium screen size devices like laptop and desktop it is rendered as three column grid layout which as 3 columns and 4 rows, and finally in large screen devices like large desktop it is rendered as four column grid layout which has 4 columns and 3 rows.
Now the question arises how we can create such responsive layouts using this Bootstrap new mobile first grid system. Let's start with the medium device that can be a laptop or normal desktop. Since our medium device layout has 3 columns and 4 rows (i.e. 3x4 grid layout). So go ahead and type the following markup.
Belarus, a landlocked country in Eastern Europe, is known for its Stalinist architecture, grand fortifications and primeval forests. In the modern capital, Minsk, the monumental KGB Headquarters loom over Independence Square, while the Museum of the Great Patriotic War commemorates the country’s role in WWII. The capital is also home to many churches, including the neo-Romanesque Church of Saints Simon and Helena.
В каталоге 1486 выпусков, 4567 Марок за период с 1920 по 2021 год