Moreover, why do we separate content and style?
In many cases, the design and development aspects of a project are performed by different people, so keeping both aspects separated ensures both initial production accountability and later maintenance simplification, as in the don't repeat yourself (DRY) principle.
Furthermore, does CSS styles have to be a separate file from HTML file? We will start with a style sheet embedded inside the HTML file. Later, we will put the HTML and the CSS in separate files. Separate files is good, since it makes it easier to use the same style sheet for multiple HTML files: you only have to write the style sheet once. We need to add a <style> element to the HTML file.
Similarly one may ask, what is the purpose of CSS Why is it good to have CSS in a separate file and not directly on the page?
CSS helps you to keep the informational content of a document separate from the details of how to display it. The details of how to display the document are known as its style. You keep the style separate from the content so that you can: Avoid duplication.
Why should we separate our files into separate HTML JS and CSS files instead of keeping them all in one file and using style and script tags?
Separate HTML, CSS, and JavaScript
Keeping all the HTML, CSS, and JavaScript code in one file can make your project difficult to read and develop. While Apps Script does require client-side code to be placed in . html file content into the Page.