I’m currently working on a website project and I want to ensure that it looks good and functions well on various devices, including desktops, tablets, and smartphones. I’ve been exploring CSS techniques for responsiveness, such as media queries and flexible layouts, but I’m encountering some challenges.

1. What are the best practices for creating a responsive design in CSS?
2. How can I use media queries effectively to adapt my layout and styles based on different screen sizes?
3. Are there any tools or frameworks that can simplify the process of making a website responsive?
   Any advice, code examples, or resources would be greatly appreciated. Thanks in advance for your help!