How does Bootstrap work?

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Bootstrap is made up of a series of CSS and JavaScript files responsible for assigning specific characteristics to page elements.

There is a main file called bootstrap.css, which contains a definition for all the styles used. Basically, the framework structure consists of two directories:

css: contains the files needed for styling elements and an alternative to the original theme;
js: Contains the backend of the bootstrap.js file (original and minified), responsible for running styled applications that require interactive manipulation.
To assign a characteristic to an element, we simply need to inform the corresponding class in the “class” property of the element that will be styled, as shown in the following example:

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In this example, the content "rounded-sm" was assigned to an image property. It is a style that adds rounded edges, not an element.

Therefore, when the image is loaded, the characteristics that refer to this class will be applied to the element.

What is the functionality of Bootstrap?
Bootstrap offers a number of features that can be implemented on a website. Below we will discuss the possibilities of this tool.

Responsive design
One of the main features of Bootstrap is to allow malta mobile database the adaptation of the page to be done according to the type of device used. To ensure responsiveness, the framework works with:

styling the <div> element;
the use of the container class.
In practice, the <div> element works to create a series of notes, similar to a table, capable of structuring the page in an adaptable way.

There was an attempt to use tables to create responsive layouts, however there were limitations in defining the length of columns which made it impossible to use them on smaller devices, such as smartphones.

The <div> element is more flexible, allowing you to easily define and resize the length.

Bootstrap has assigned the <div> element a container class property, which works to determine the appropriate dimensions for elements inserted into that space.