CSS styles done this way are loaded each time an entire website is refreshed, which may increase loading time. Additionally, you won’t be able to use the same CSS style on multiple pages as it’s contained within a single page. Having everything on one page makes it easier to share the template for a preview.

  • As with everything in CSS, there is the potential to make the document less accessible with your changes — we will aim to highlight potential pitfalls in appropriate places.
  • For beginners, Starting with HTML + CSS teaches how to create a
    style sheet.
  • When combined with HTML and CSS, JavaScript makes your website magical.

This module provides a gentle beginning to your path towards CSS mastery with the basics of how it works, what the syntax looks like, and how you can start using it to add styling to HTML. Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS describes how elements should be rendered on screen, on paper, in speech, or on other media.

Positioning and styling the main page title

You might have seen a website that fails to load completely and has a white background color with most of the text being blue and black. This means that the CSS part of the web page didn’t load correctly or it doesn’t exist altogether. CSS is not technically a necessity, but you probably wouldn’t want to look at a web page that features only HTML elements as it would look completely bare-boned. Without CSS, web designers must typically lay out their pages with techniques such as HTML tables that hinder accessibility for vision-impaired users (see Tableless web design#Accessibility). There is no way to name a CSS rule, which would allow (for example) client-side scripts to refer to the rule even if its selector changes. Next, we set the heading’s top and bottom padding to 20 pixels.

In addition, properties can be placed directly in the HTML source code of an element using the inline style. In the following, we provide an overview of the three methods to integrate CSS in HTML. Before CSS, nearly all presentational attributes of HTML documents were contained within the HTML markup. All font colors, what is css background styles, element alignments, borders, and sizes had to be explicitly described, often repeatedly, within the HTML. CSS lets authors move much of that information to another file, the style sheet, resulting in considerably simpler HTML. It’s rare to see creative information directly placed into HTML code.

How CSS Actually Works

As a styling language, CSS specifies how users view documents, from the layout to the style. The documents affected are typically text files that get structure from a markup language, the most common of which is HTML, however, XML and SVG are also popular. In order to present the document to the user, CSS converts it from the text file into a useable form. With browsers, this presentation occurs on a computer screen, printer or projector. It is a style sheet language which is used to describe the look and formatting of a document written in markup language.

what is css

This works as long as you want all of the elements of that type in your document to look the same. To select a subset of the elements without changing the others, you can add a class to your HTML element and target that class in your CSS. The selector points to the HTML elements you want to style. The declaration block contains one or more declarations separated by semicolons. That’s what web pages with only HTML look like, and I think you’d agree that that’s not very appealing.Before using CSS, all of the stylizing had to be included into the HTML markup.

How Does CSS Work with HTML?

External style sheets can be referenced with a full URL or with a path relative to the current web page. The CSS font-size property defines the text size to be used. For beginners, Starting with HTML + CSS teaches how to create a
style sheet. For a quick introduction to CSS, try chapter 2 of Lie & Bos or Dave Raggett’s intro to CSS. Something else you might like to try is styling a paragraph when it comes directly after a heading at the same hierarchy level in the HTML.

I really hope you got something useful from this article. These days, CSS has become more than just a design language, though. You can actually implement animations and smooth transitions with just CSS.

what is css

If you’re just starting out with both CSS and HTML, you can even take a learning path tailored to both. HTML is used to structure the website, and then CSS is layered over top for style. With both skills, you’ll have the full suite required to get down to work designing and building websites. Once you understand the basic principles of stylesheet language, their application is simple enough. Learn more about the top CSS tricks that will make your website look even more professional.

what is css