What is CSS? | Newtech Academy

CSS is an essential stylization language on web design. Behind each web page there is an HTML file, which contains basic elements such as text, images and connections, but to give life to these pages, CSS goes to the scene. If HTML forms the skeleton of a page, CSS represents its clothes, through which the HTML elements are customized and stylized, gaining color, shape and a specific layout.

Have you ever wondered how those web pages are created that not only work, but seem spectacular? Behind this magical effect there is CSS: the essential technology that transforms simple text structures into impressive visual experiences. From its first lines of code to today’s advanced features, CSS is the spine of modern web design.

If you want to understand how the CSS gives life to the Internet and improves every web page you visit, this article is for you. We invite you to discover how this essential technology not only improves the appearance of the pages, but also defines how you interact with online content. Stay with us to explore the secrets of the CSS and as a soul the web!

What does CSS mean?

CSS is of three types: in line, internship OR external.

1. CSS Inline: It is used directly in the code to define the style of the desired element.
2. CSS stagist: It represents the definition of style within the HTML code, but not for each element, but at the end of the document.
3. External CSS: It represents an .CSS file that defines the style for all elements on the site. This is the most common type of use of CSS because it is much easier to modify and you can change the site globally.

Here is an example of a CSS code that changes the background color of a blue web page:

body {

Background-Color: blue;

}

Advantages of the use of CSS

Control on appearance and design: CSS allows you to control the appearance and design of HTML elements, including character size, color, alignment, spacing and more.

Reuse of the code: CSS allows you to reuse the code to create common styles for HTML elements. This can save time and effort, because it is not necessary to create the same code several times.

Efficiency: CSS can improve the performance of the website by separating the design code from the content code.

Accessibility: CS can be used to create accessible websites for people with disabilities. You can use CSS to control characters and colors to make them easier to read.

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How does CSS work?

CSS is responsible for formatting, but to format different elements, there must be a way to hit certain elements. You can do it through the HTML codes used.

Each HTML article can be designed separately by CSS. In addition, classes (class =) and identifiers (ID =) are often used to design different sections with CSS. Therefore, it is possible to design the same HTML elements in different ways, depending on where they are on the site.

Below is an example of the CSS code:

On a website, the body of the page normally adopts a standard character and size. In the example given, the predefined set is Proxima-Nova. If, for some reason, it cannot be viewed, the browser will use Helvetica, followed by any character in the Sans-Serif category. The standard size standard is established at 16 pixels.

Separately from this, the «A» element is used to specify the style of connections on the site. It defines the color of a standard connection and the color that the connection will have when the user positions the mouse cursor, known as the «hover» effect. These settings help to distinguish connections from the rest of the text and improve the interactivity of the page.

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What is a CSS file?

A CSS file represents a text document used on web design to define the style and visual aspect of a web page. It contains a series of style rules that control the appearance of HTML elements, such as characters, colors, spaces, dimensions, edges, curbs and even animations.

The characteristics of a CSS file

1. Style rules: These consist of selectors and blocks of declarations (styles specified for that element).
2. Selectors: They are used to identify the HTML elements on which styles are applied. They can be simple (such as paragraphs P label) or complex (using classes or ID to select specific elements).
3. Style declarations: Each declaration of style has a property (for example, color, size) and a value (for example red, 12px). They determine how the elements appear on the web page.
4. Warning: CSS allows you to apply styles in different ways and in a certain order of definition of the priorities, which means that some styles may climb over others depending on how they are defined.

CSS files are saved with .CSS extension and are often linked to the HTML pages by a tag In the main section of the HTML document. These allow the separation of the presentation content (CSS), making the design and maintenance of the most efficient and easier sites.

Application of multiple CSS files on the same HTML page

It is possible to incorporate multiple files of this CSS language on the same HTML page. To do this, apply several articles To tie the separate files to the HTML document. For example, you can use the following code:

In general, it is advisable to use a single external CSS file to keep the site easier to maintain and modify. However, in some cases, such as large and complex websites, it may be necessary to have multiple CSS files to organize styles and make them easier to manage.

Use of online and external styles at the same time

It is possible to use in line and external styles at the same time. However, the in -line styles will overwhelm external styles because they are more specific. If you want to apply in line and external styles for the same HTML element, use the attribute style For online styles and a separate CSS file for external ones. For example, it is possible to use the inline style to change the color of the text and the external style to change the background of the HTML element.

What are the best CSS use practices?

CSS practices are principles and techniques that help write the most efficient CSS code, easier to maintain and more efficient. These can be applied to any type of CSS project, from simple websites to complex applications.

1. Organization of the CSS code: While working on larger projects, keeping a large CSS file can be difficult. To make the code easy to maintain, it is advisable to organize it in logical sections and use conventions of names and identifiers to maintain consistency.
2. Using an external CSS file: Instead of using styles in line or internal, it is better to use an external file. This makes styles easier to modify and maintain.
3. Using a css reset: Each browser has its predefined styles, which can lead to problems to view the site. Therefore, it is advisable to use a CSS recovery file to remove the predefined browser styles and start from scratch.
4. Using a CSS pre -procurement: Parassors, such as Sass or not, offer many useful functions, for example variables, functions and loops. These can make the CSS code easier to write and maintain.
5. CSS file compression: File compression can reduce their size and improve the loading speed of the site. There are many tools available to compress files such as the CSS compressor.

What is CSS3?

CSS3 is the latest update of the CSS2 version. A significant change in CSS3 is the introduction of modules. Some of the most important new segments (modules) added to this standard for the formatting of HTML elements bring a considerable advantage in the development of webdesign activity.

The most important modules added to CSS3 are present below:

• Selectors (Selectors)
• Box model
• Wallpapers and edges (backgrounds and edges)
• Image values ​​and replaced content (image values ​​and replacement content)
• Text effects (Efecte de Text)
• 2D/3D transformations (2D/3D transformations)
• Animations (animations)
• Multiple columns layout (multiple column arrangement)
• User interface (user interface)

Advantages of the use of CSS3

Coherent and precise positioning: CSS3 offers a series of new properties for the positioning of the web elements. These properties allow a more precise and flexible positioning, which can be useful to create complex user interfaces or create interesting visual effects.

Easy customization: CSS3 is a modular language, which means that CSS properties can be grouped in separate files. This allows you to customize a web page, as you can only change the CSS files containing the properties you want to modify.

More accessible graphics: CSS3 is provided with properties that can be used to create more complex and realistic visual effects.

WATCH HEART ONLINE WITHOUT PLUGIN OF THIRD PLUGIN: CSS3 allows you to integrate online videos. These properties can be used to create videos built in -in that can be made directly in the browser without requiring third plugins.

Our conclusion?

By embracing the principles of CSS, designers and web developers not only can it create aesthetic sites, but also functional, consistent and easy to maintain. CSS offers a clear separation between structure and presentation, allowing you to modify each visual element without affecting functionality. Therefore, the sites become more flexible and faster to adapt to new trends, guaranteeing an attractive experience for users.

Are you ready to transform your web pages into a better digital experience? Sign up for our IT courses and learn to master CSS’s art! With the help of our mentors, you will acquire practical skills, you will understand how to create impressive sites and you will be guided to your success in the technological sector. Don’t miss the opportunity to become an expert on modern web design!