Bootstrap comes with a set of pre-styled responsive, mobile-first components that possess a definite UI kit.Tailwind offers predesigned widgets to build a site from scratch with fast UI development.Sites created using Bootstrap follow the generic pattern that makes them look identical.Tailwind CSS uses a set of utility classes to create a neat UI with more flexibility and uniqueness.

In CSS, the term "box model" is used when talking about design and layout. The CSS box model is essentially a box that wraps around every HTML element. It consists of: margins, borders, padding, and the actual content. Content - The content of the box, where text and images appear Padding - Clears an area around the content. The padding is transparent Border - A border that goes around the padding and content Margin - Clears an area outside the border. The margin is transparent The box model allows us to add a border around elements, and to define space between elements.

The core characteristic of a semantic element is that it clearly communicated its meaning to both the developer and the browser. These elements clearly define its content. The semantic HTML tags help the search engines and other user devices to determine the importance and context of web pages. The pages made with semantic elements are much easier to read. It has greater accessibility. It offers a better user experience.