Grid systems are used to create page layouts by arranging your information in a sequence of rows and columns. The Bootstrap grid system operates as follows:
The word "media query" is a sophisticated way of saying "conditional CSS rule." It simply adds CSS to a page based on a set of circumstances. The style is applied if certain conditions are met.
You may move, show, and hide content based on the viewport size with Bootstrap's Media Queries. A device specification and a size rule are the two pieces of a media query.
The word "media query" is a sophisticated way of saying "conditional CSS rule".
By default, the background color of "SKY BLUE".
600px or less, it will change
With the four levels of grids available, you're bound to run into situations where the columns don't clear properly at particular breakpoints because one is taller than the other. Use a combination of a class to fix this. clearfix and the responsive utility classes are two examples of this.
For more specific layouts, offsets are a handy feature. They can be used to push columns over for more space, or they can be used to push columns over for more space (for example). Offsets are not supported by the.col-xs = * classes, but they can be easily duplicated by using an empty cell.
Employ the.col-md-offset-* classes to use offsets on large displays. These classes extend a column's left margin by * columns, where * is a number between 1 and 11.
Add a new to nest your content with the default grid. Within an existing.col-md-* column, there is a row and a set of.col-md-* columns. A group of columns that adds up to 12 should be included in nested rows.
Another useful aspect of the Bootstrap grid system is the ability to write columns in one order and display them in another. With the.col-md-push-* and.col-md-pull-* modifier classes, you may simply adjust the order of built-in grid columns, with * ranging from 1 to 11.