To use CSS to change the layout of your HTML page for different devices and screen sizes, you can use a technique called responsive web design. Responsive web design is an approach to web design that allows your web pages to automatically adapt to different devices and screen sizes, without the need for separate mobile and desktop versions of your site.

Here are some techniques that you can use in CSS to make your HTML page responsive:

Use media queries: Media queries allow you to apply different CSS styles based on the characteristics of the device or screen size. For example, you can use a media query to apply different styles to a page when viewed on a mobile device compared to a desktop device. Here's an example:

css
Copy code
/* Apply these styles for devices with a maximum width of 768px */
@media (max-width: 768px) {
  /* CSS styles go here */
}
Use a flexible grid system: A grid system allows you to organize the layout of your page into rows and columns. A flexible grid system allows these rows and columns to adjust to different screen sizes, making it easier to create a responsive layout. There are several popular grid systems available, such as Bootstrap and Foundation.

Use flexible units for sizing: Instead of using fixed units like pixels, you can use relative units like percentages or em to size your elements. This allows your page to scale proportionally to different screen sizes.

Use images with max-width: 100%: To prevent images from overflowing their containers on smaller screens, you can set the max-width property of the image to 100%. This ensures that the image scales down to fit its container.

By using these techniques, you can create a responsive layout that adapts to different devices and screen sizes. It's important to test your layout on multiple devices to ensure that it looks good and functions correctly on all screen sizes.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence