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If web design comes to your mind when you read the letters CSS, you are in the right place. CSS stands for Cascading Style Sheets. The Turkish meaning of the phrase Cascading Style Sheets is Cascading Style Sheets. CSS is defined as Style Template in Turkish. If you are thinking of learning web design, the first thing you will encounter is the concept of CSS. If we want to define CSS, we can basically define it as a language that manages the design and presentation of web pages. To use CSS codes, you need HTML codes because CSS works together with HTML, which processes the content of web pages. HTML offers many alternatives for text formatting of the site you are designing. Thanks to the CSS program, you can prepare larger and more unique templates for each page within the site you design. In short, you can change various visual properties such as size, text, color character of HTML elements on the website you design with CSS codes.
HTML or CSS? Which one?
If you are interested in web design and want to learn web design, you should know that a website has several structural layers. These layers are divided into three classes: content layer, visualization layer and interaction layer. HTML forms the content layer, CSS forms the visualization layer, and Javascript forms the interaction layer. The HTML layer is present on every web page. You can convey the information you want to convey to visitors to the website you have prepared by creating the HTML layer. Although today’s web pages are mostly text, different contents such as images, animations and videos are also used. There is no information about how the content will be displayed in the content layer. The visualization layer, that is, CSS, determines how the content will be displayed to the person visiting the page. You need to adjust the content you upload to the website according to the screen size, determine the font size, and define visual elements such as color and white space in this layer. The programming language recommended and used for the visualization layer is CSS. At this point, it becomes clear why you should use CSS codes.
Why Should You Use CSS Program?
Now that we have explained that the CSS program describes how to display content tagged with HTML, it is time to explain why you should use the CSS program. HTML does not determine how content is displayed and placed on the page. The job of the HTML program is to describe the content and specify the order of the content. In other words, HTML’s job is to answer the questions: What is the title of the page, what are the links on the page, are the lines arranged one under the other a list or an ordinary paragraph. Despite all this, HTML does not interfere with issues such as the size of the logo, its location on the page, and the color of the title. This is where the role of CSS begins. In website design, CSS codes are the full authority on what, where and how to display. For example, CSS is responsible for ensuring that the logo is placed in the upper right corner of the page. After a while, when your customer wants the logo to be displayed in the upper left corner, covering the entire screen, you can do this with CSS without touching the HTML code or the file containing the logo. In addition, the CSS program facilitates site updates and maintenance because it collects visualization information in several files. It saves data traffic because visualization information is collected in several files.
Advantages of Using CSS Codes
Using CSS, one of the indispensable programs of responsive design applications, has many advantages. If we count these advantages, we can place data traffic savings in the first place. Since all styles of the CSS program are included in only a few CSS files, data traffic is saved. Moreover, you can measure it. When you code the CSS file separately, it is stored by the browser once you download the file. You can use this file stored by the browser when you use the same CSS file on other pages. You won’t have to download the same file again. One of the advantages of using CSS codes is that it provides content flexibility. When you separate content and visual design, it becomes easier to use the same content in different environments. For example, you can use the same content on the home page as well as on internal pages and for the RSS feed. You can also use the same content for screen readers. Another advantage of the program is its ease of updating. You can keep the visualization information of the entire site in one or several CSS files. For example, you have a site with 1000 pages. When you want to enlarge the headings on your site by one point, you update a single line in a single file thanks to CSS. Additionally, the CSS program allows for up-to-date coding strategies.
How Many Alternatives Are There for Adding CSS Styles?
Adding CSS styles to your website

There are 3 alternatives for . First, you can use General CSS. By adding CSS rules to the <head> section of the HTML document, you can link to an external .css file containing all CSS rules. Additionally, if you want to apply rules to your website, you can use native CSS. First, let’s talk about the general CSS code. Place general CSS codes in the <head> section of a page you specify. You can use classes and IDs to specify CSS code, but global CSS will only be active on the specific page where it is added. This way the CSS styles you apply will be loaded every time the page loads, so loading time can increase. You should place it between general CSS <style> </style> tags. The most convenient way to add a CSS program to your website is to link your website to an external .css file. This way, any changes you make to the external CSS file you link to your website will be reflected globally on your website. You should place the link to the external CSS file in the <head> section of the page. The last option, the native CSS program, is used for a specific HTML tag. Using native CSS is not recommended as each HTML element must be styled individually in the native CSS program. When you only use native CSS, you may have a hard time managing your website. Using native CSS can be useful when you don’t have access to CSS files or only have to style a single element.
What are CSS Codes?
The signals that enable a software program to be written are called code. CSS codes consist of two basic components. One of these components is a selection that separates elements and styles. The other component is the expression part, where we declare one or more properties. The selection is often the HTML element you will style. For example, h1, body, p, a etc. The expression part is a continuous feature: value; are listed as follows. Properties and values are listed between { } signs. CSS codes always end with a semicolon (;). The expressions are in square brackets. Let’s share an example of CSS codes as an example:
p { color: blue; text-align: center; }
What are the Most Frequently Used Codes in the CSS Program?
As in every software program, there are frequently used codes in the CSS program. The most frequently used CSS codes include link properties, formatting, list properties, layer properties, font properties, text properties, cursor properties, background properties and table properties. For example; The border code, which is among the CSS codes that specify table properties, allows the edges of the table to be shaped. When we look at the link properties, it means the status of the active code when the link is clicked. We have stated that the CSS program is among the layers that make up a web page. Since CSS codes constitute the visualization layer, codes related to font properties and formatting are also among the CSS codes. The fomnt-family, which is among the codes related to font features, determines the font type (such as times roman, verdana). CSS codes are placed, that is, written, inside HTML codes. CSS codes have a language structure that is easy to understand and learn. As in many coding systems, English is used in CSS coding. Therefore, it is sufficient to know the English words that will be added to the code writing.