Understanding 1.5px: Can We Use Sizes Smaller Than 1px in CSS? скачать в хорошем качестве

Understanding 1.5px: Can We Use Sizes Smaller Than 1px in CSS?

Explore the usage of `1.5px` in CSS and learn why it's possible to use sizes smaller than `1px`. Understand how different types of pixels interact in modern web design. --- This video is based on the question https://stackoverflow.com/q/70195974/ asked by the user 'minjae kim' ( https://stackoverflow.com/u/14727639/ ) and on the answer https://stackoverflow.com/a/70196120/ provided by the user 'A Haworth' ( https://stackoverflow.com/u/10867454/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Why can I use 1.5px as size? Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Understanding 1.5px: Can We Use Sizes Smaller Than 1px in CSS? When it comes to web design, clarity and precision in size units are essential. Many developers have encountered the term "pixel" and assumed that 1px is the smallest unit a computer can represent. However, you might have noticed that when you apply 1.5px in your CSS, it works! This raises an intriguing question: Why can we use 1.5px as a size? Let's break this down to understand what pixels really are and how they function in modern web design. The Confusion of Pixels To understand our question, we first need to clarify what we mean by "pixel": Device Pixels: These are the physical dots that make up your screen. They are the tiny colored squares that form images and text. CSS Pixels: This is an abstract unit used in web design. It defines how size is rendered on the web, irrespective of the physical resolution of the device. In the past, one CSS pixel corresponded directly with one device pixel. Thus, it was reasonable to say that 1px was the smallest size that could be displayed. However, today's technology has changed that paradigm. The Modern Pixel Landscape Here’s why using 1.5px is possible and even practical today: Device Pixel Density Higher Density Screens: Modern devices often have higher resolution displays, meaning multiple device pixels can represent a single CSS pixel. For instance, a high-density display might use 2 device pixels in both horizontal and vertical directions to create a single CSS pixel. Fractional Pixels: Because of this, it is now possible to represent fractional sizes like 1.5px effectively. This size may translate to visually larger than 1px but still smaller than 2px, giving you flexibility in design. Browser Rendering Differences While using 1.5px is possible, it’s important to note that: Variability Across Devices: Different devices may interpret CSS pixels differently. What looks great on one device might not on another. Rounding Issues: Browsers may sometimes ‘round’ these fractional pixel values, which means slight variations in rendering can occur, leading to unexpected visual effects. Guidelines for Using Pixels So, is it okay to use units smaller than 1px? Here are some best practices to consider: Test Across Devices: Always check your designs on different screens to ensure they look as expected. Stay Responsive: Keep in mind how different devices may handle pixel density and CSS. Use percentage units or relative sizes (like em or rem) when possible. Use Sparingly: While you can use 1.5px or smaller, use them judiciously to avoid browser inconsistencies and maintain a coherent design. Conclusion In summary, while 1px was indeed thought of as the smallest unit in the past, modern web design allows for more flexibility thanks to advancements in display technology. The emergence of high-density screens and the ability to utilize fractional pixels means that sizes like 1.5px can provide designers with more creative control. However, be cautious and aware of how these fractional values can behave across different devices and browsers. By understanding the concepts of device and CSS pixels, you can better utilize these tools in your web design projects. Happy designing!