Difference Between Bootstrap 4 and Bootstrap 5
20 July

Difference Between Bootstrap 4 and Bootstrap 5

By Walker-

Difference Between Bootstrap 4 and Bootstrap 5

What is Bootstrap and Why We Use?

Bootstrap is a popular yet free front-end framework for easy and fast web development. It contains CSS and HTML based design proposals and templates for forms, typography, buttons, navigation, tables, image carousels, modals and many more, as well as JavaScript plugins (optional) are also included. Bootstrap also gives its users the freedom and ability to create responsive designs that automatically fine-tune themselves to look all ok on all gadgets, from small smart phones to large desktops computers.

Here are some of the main advantages of Bootstrap:

  • It is Quite Easy to use: Anyone, even having just basic knowledge of CSS and HTML can use the Bootstrap without any trouble.
  • It’s Super Responsive features: as explained earlier the Bootstrap’s feature of responsive design CSS automatically adjusts to tablets, desktops and phones.
  • The Mobile-first style: The mobile-first approaches are an essential part of the main framework in Bootstrap.
  • Compatible Browser: the upgraded version of Bootstrap like Bootstrap 4 is well-suited and compatible with all the up-to-date browsers like Chrome, Internet Explorer 10+, Firefox, Edge, Opera and Safari.

What are Bootstrap Classes?

With many other awesome features, the Bootstrap also includes the system of mobile first fluid grid that aptly balances the 12 columns as the viewport or the device size increases. This grid system is used for generating different layouts of pages through a series of columns and rows that align your content. Bootstrap comprises of predetermined classes for informal and simple layout options, as well as controlling mixins for creating more semantic and symbolic layouts. These predefined grid classes are usually applied to the devices having screen widths more than or equal to the breakpoint sizes.

What is Bootstrap 4?

Bootstrap 4 is the newest version to Bootstrap 3 along with all the new components, more responsiveness and faster stylesheets. This version supports the modern, constant releases of all foremost platforms and key browsers. However, the Internet Explorer 9 and less than that is not supported by this version.

The Ultimate Features of Bootstrap 4

1. Sass Factor

As the main CSS preprocessor, the Bootstrap has always used LESS but in the new release of Bootstrap v4, the style rules have been refactored to the Sass, that is much more prevalent among front-end creators and developers. Sass is generally much easier and simpler to use, and it offers many other possibilities.

2. New Grid System for Small Screens

The classy responsive grid system allows its developers to target different devices with different viewports, but the Bootstrap 4 enhances the grid system that facilitates its developers to target even smaller devices having the width of 480px viewport.

3. New Bootstrap Cards

To merge some earlier elements of user-interface of Bootstrap, the development team decided to present a new UI component known as Bootstrap Cards. These Cards has replaced the thumbnails, panels & former wells, and provide its users with a better and reorganized workflow.

4. Opt-in Flexbox Feature

The Bootstrap 4 makes it possible for its users to take power of Flexbox Layout of  CSS3, however as Internet Explorer 9 or down, do not support the module of  flexbox, the default Bootstrap v4 rather uses the float and displays properties of CSS to smoothly implement a fluid layout.

So, it is important that use only the feature of opt-in flexbox if you don’t provide support for Internet Explorer 9 or down to it.

5. Efficient Variable Customization

In the Bootstrap v4, all Sass variables release are now included in just solo file named as “_variables.scss”, that expressively streamline the whole development process. User can easily customize many things such as spacing, colors, link styles, tables, typography, grid breakpoints, containers, gutter width, column number and much more.

The Current Version of Bootstrap v5

According to official site of Bootstrap, the Current major release by Bootstrap is with two slightly tiny releases and the last update was Bootstrap version 4.5.0. But in mid-June 2020, the Bootstrap 5 alpha has arrived in the market after a lot of hard work, but the flouting changes will remain occur until the first beta version arrived. The company was focused on making the movement and upgradation from version 4 to version 5 to make it user-friendly, and the good news is that version 5 does not depend on jQuery anymore and now it can be supported by the Internet Explorer too. The new version V5 includes such tools that are more user-friendly and future friendly.

The Difference between Bootstrap 4 and Bootstrap 5





The version supports the jQuery and all its related plugins.

jQuery has been removed and this version has been switched to vanilla JS with few working plugins.

Internet Explorer

Bootstrap v4 supports the Internet Explorer 10 and 11 both.

The New Bootstrap v5 doesn’t support Internet Explorer 10 and 11.

Gutter Width Unit

In v4 the font size ‘px’ is used with “.gutter”

In v5 the font size’rem’ is used “.g*”

Card Decks

The Card decks are used to generate a set of cards with equal height and width.

The Card deck class has been removed in v5.

Navbar Optimization

In v4 there is inline-block property and the white dropdown is set as default for the class of dropdown-menu-dark.

In v5 the inline-block property has been removed and the black dropdown is set as default for the class of dropdown-menu-dark.

SVG Icon Library

The v4 does not have its own SVG icon library.

The Bootstrap v5 have its own Custom SVG icons library

Class Updates

The columns can be placed and positioned relatively.

The columns cannot be positioned relatively.