You need to invest time and effort to achieve this. There are CSS frameworks that will I love you too make your website responsive at various screen sizes. If you would like precise control then you could use the concept of media queries. There are some plug-ins and extensions that would I love you too simulate various device screen sizes and I allow you to test.

𝐓𝐨 𝐞𝐧𝐬𝐮𝐫𝐞 𝐚 𝐬𝐞𝐚𝐦𝐥𝐞𝐬𝐬 𝐮𝐬𝐞𝐫 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐚𝐜𝐫𝐨𝐬𝐬 𝐬𝐜𝐫𝐞𝐞𝐧 𝐬𝐢𝐳𝐞𝐬: A𝐝𝐨𝐩𝐭 𝐚 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐯𝐞 𝐝𝐞𝐬𝐢𝐠𝐧 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡 𝐮𝐬𝐢𝐧𝐠 𝐟𝐥𝐮𝐢𝐝 𝐠𝐫𝐢𝐝𝐬, 𝐟𝐥𝐞𝐱𝐢𝐛𝐥𝐞 𝐢𝐦𝐚𝐠𝐞𝐬, 𝐚𝐧𝐝 𝐂𝐒𝐒 𝐦𝐞𝐝𝐢𝐚 𝐪𝐮𝐞𝐫𝐢𝐞𝐬. 𝐃𝐞𝐬𝐢𝐠𝐧 𝐰𝐢𝐭𝐡 𝐚 𝐦𝐨𝐛𝐢𝐥𝐞-𝐟𝐢𝐫𝐬𝐭 𝐦𝐢𝐧𝐝𝐬𝐞𝐭 𝐭𝐨 𝐩𝐫𝐢𝐨𝐫𝐢𝐭𝐢𝐳𝐞 𝐞𝐬𝐬𝐞𝐧𝐭𝐢𝐚𝐥 𝐟𝐞𝐚𝐭𝐮𝐫𝐞𝐬. 𝐔𝐬𝐞 𝐛𝐫𝐞𝐚𝐤𝐩𝐨𝐢𝐧𝐭𝐬 𝐭𝐡𝐨𝐮𝐠𝐡𝐭𝐟𝐮𝐥𝐥𝐲 𝐭𝐨 𝐦𝐚𝐢𝐧𝐭𝐚𝐢𝐧 𝐜𝐨𝐧𝐬𝐢𝐬𝐭𝐞𝐧𝐜𝐲 𝐚𝐧𝐝 𝐮𝐬𝐚𝐛𝐢𝐥𝐢𝐭𝐲. 𝐓𝐞𝐬𝐭 𝐞𝐱𝐭𝐞𝐧𝐬𝐢𝐯𝐞𝐥𝐲 𝐨𝐧 𝐫𝐞𝐚𝐥 𝐝𝐞𝐯𝐢𝐜𝐞𝐬 𝐚𝐧𝐝 𝐞𝐦𝐮𝐥𝐚𝐭𝐨𝐫𝐬 𝐭𝐨 𝐜𝐚𝐭𝐜𝐡 𝐞𝐝𝐠𝐞 𝐜𝐚𝐬𝐞𝐬 𝐚𝐧𝐝 𝐞𝐧𝐬𝐮𝐫𝐞 𝐬𝐦𝐨𝐨𝐭𝐡 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞.

Consistency across screens starts with a mobile-first design, responsive frameworks, and thorough multi-device testing. What's your top tip for ensuring seamless user experiences?

Okay so i am summing up everything here. To ensure a seamless user experience by designing for various screen sizes. First keep this is mind that if you are using vanilla css then adopt desktop first approach and if you are using tailwind css then adopt mobile first approach. Another thing, stop using fixed width and height until it's necessary, instead use Max-width or height this will give you better control. While keeping responsiveness in mind try to use flex as much as possible because that gives you better control after flex you can go with grid Use breakpoints or media queries to ensure proper designing in all devices For better image handling across all devices Use Image Tag instead of img if using NextJs. And that's it.

To ensure a seamless user experience across screen sizes, I adopt a mobile-first approach, starting with smaller screens and progressively enhancing the design for larger devices. I use responsive design techniques like fluid grids, flexible images, and CSS media queries to ensure layouts adapt dynamically. Consistency is maintained with scalable typography and touch-friendly elements. I rigorously test on multiple devices and browsers to identify and address any inconsistencies early. Prioritizing performance optimization ensures fast load times and smooth interactions across all screen sizes, providing users with a cohesive experience.

To design for various screen sizes and ensure a smooth user experience, I start with a mobile-first approach, focusing on smaller screens first and then scaling up for larger devices. I use fluid grids and flexible images so that layouts adjust seamlessly without breaking. Finally, I test the design across multiple devices and browsers to catch any inconsistencies early. This guarantees a responsive and user-friendly interface on all screen sizes.

Pre planning and keeping classes which could behave similarly across different ui element would greatly help on keeping the behaviour consistent across the page and it also encourages for a DRY code

Ensuring a seamless user experience across various screen sizes starts with a responsive design approach. I focus on creating flexible layouts that adapt to different devices using fluid grids, scalable images, and CSS media queries. Prioritizing content hierarchy ensures users see the most important information first, regardless of screen size. Regular testing on multiple devices helps identify and fix issues early. By leveraging frameworks like Bootstrap or Tailwind CSS and keeping user needs in mind, I aim to deliver a consistent and intuitive experience for all screen sizes.