Discuss the impossible functionality of CSS styles

CSS is a very important skill in web development, which can control the appearance and layout of HTML elements. Although there are many things you can do with CSS, it also has some limitations. In this article, we will discuss what is not possible with CSS styles.

1. No modification of the text

CSS can control the color, size, font, style and other properties of the text, but it cannot modify the content of the text. If you want to modify the text in CSS, such as changing all "Hello" to "Hi", that's not possible. This functionality can only be achieved through JavaScript or a server-side scripting language.

2. Cannot dynamically adjust the layout

CSS can control the size and position of HTML elements, so CSS can be used to design the layout of web pages. However, CSS cannot adjust layout dynamically like JavaScript. CSS does not have event handling capabilities, and it is impossible to automatically adjust the layout when a specific event is triggered.

3. Cannot track user behavior

CSS cannot track user behavior, or it cannot change web page content in response to user behavior. This means that if you want your web page to change based on user input or behavior, you need to use JavaScript or server script.

4. Cannot create connections between elements

CSS can create links and hover effects, but it cannot create connections between different elements. For example, if you want to create a clickable bubble tooltip, it's not possible to place the tooltip text above the tooltip bubble. You need to use JavaScript or HTML tags (such as the <a></a> tag) to create the connection.

5. Cannot control background image size

CSS can control the position, repetition and other properties of the background graphic, but it cannot control the size of the background image. This means that if you want the background image to adapt to the size of the browser window, you need to use JavaScript or HTML.

6. Cannot create complex shapes

CSS can create simple shapes, such as rectangles, circles, triangles, etc., but it cannot create complex shapes. If you want to have complex shapes in your web page, such as stars, hearts, etc., then you need to use JavaScript or SVG.

7. Cannot control the user to print the page

CSS can set the printing style of the page, but it cannot control how the user prints the page. This means that if you want certain elements to not appear or appear larger or smaller when the user prints the page, you need to use JavaScript or a specific printing style.

Summary

Although CSS is one of the most important technologies in web development, it also has some limitations. In some cases, we need to use JavaScript or other technologies to achieve the required functionality. Therefore, when designing web applications, we need to pay attention to choosing the most appropriate technology to achieve our goals.

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