The `` element contains the main content of a web page, including text, images, and other elements.

The font-size property is used to set the font size of an element, and the value can be specified in pixels (px), ems, or percentages.

The document.querySelector() method returns the first element that matches a specified CSS selector.

Consistency in web design refers to the use of consistent visual elements and layouts throughout a website, which helps create a unified and cohesive user experience.

A CDN is used to improve website performance by distributing content, such as images, videos, and JavaScript files, across multiple servers located in different geographic regions, reducing latency and improving load times.

The <a> element is used to create a hyperlink, which allows users to navigate to another web page or section of the same page.

Classes can be applied to multiple elements, allowing you to style multiple elements with the same set of rules, while IDs can only be applied to one element, making them useful for selecting and styling specific elements.

The addEventListener() method is used to add an event listener to an element, allowing you to specify the event type (such as 'click' or 'mouseover') and the function to be executed when the event occurs.

CSS preprocessors like Sass and Less allow you to write CSS code in a more concise and maintainable way, using features like variables, mixins, and nesting, which can make it easier to manage and update your CSS code.

React is a popular web development framework known for its component-based architecture, which allows you to build complex user interfaces by composing reusable components.

The meta description tag is used to provide a brief summary of the web page's content, which is often displayed in search engine results and can influence click-through rates.

The line-height property is used to control the spacing between lines of text, allowing you to adjust the vertical spacing between lines.

A CDN is used to improve website performance by distributing content, such as images, videos, and JavaScript files, across multiple servers located in different geographic regions, reducing latency and improving load times.

The removeChild() method is used to remove an element from the DOM, allowing you to dynamically remove elements from the web page.

A CSS reset stylesheet is used to normalize browser default styles, ensuring that elements are displayed consistently across different browsers and devices.