This pattern works because each card is an item that spans three rows of the parent grid, then uses subgrid to inherit those rows into the card. The subgrid value of grid-template-columns and grid-template-rows means that a grid item that has display: grid applied can inherit the track definition from the part of the parent grid it is placed over.įor example, the following three card components have a header and footer aligned with the adjacent card headers and footers, even though each card has an independent grid. We are also exploring new scroll snap feature proposals. We'll focus on scroll snap, scroll-behavior, and overscroll-behavior to help scrolling be more consistent and smooth across platforms. The 2021 Scroll Survey Report confirms that scrolling features and scrolling compatibility are difficult to implement and have many areas for improvement. These units will make it easier to create layouts that fill the visible viewport on mobile devices while taking the address bar into account.Īdditionally, the cross vendor team behind Interop 2022 will collaborate on researching and improving the state of interoperability of existing viewport measurement features, including the existing vh unit. CSS Values and Units Level 4 adds new units for the largest, smallest, and dynamic viewport sizes, lv*, sv*, and dv*. New viewport units #ĭifficulties dealing with viewport sizing are prominent in both the MDN Browser Compatibility Report 2020 and the new State of CSS 2021 survey. These functions support expanded color spaces (LAB, LCH, and P3), and in addition to HSL and sRGB, they default to the uniform LCH color space. color-contrast(): Selects from a list of colors the color with the highest contrast to a specified single color.color-mix(): Takes two colors and returns the result of mixing them in a specified color space by a specified amount. There are two functions defined in CSS Color Level 5 that enable more dynamic theming on the web platform: Color functions built into CSS mean that colors can be dynamically updated, and new color spaces remove the restriction to the sRGB gamut, and perceptual limitations of HSL. To use color functions in a design system, you currently need to rely on Sass, PostCSS, or calc() on HSL values. This means you don't need to order selectors carefully or create highly specific selectors to overwrite base CSS rules. They provide a way to group selectors into layers, each with its own specificity. The new areas of focus are: Cascade layers #Ĭascade layers give web developers more control over the cascade. They include 10 new areas, plus 5 carried over from Compat 2021. The following features will be the focus of Interop 2022. In that terminology,this effort is about interoperability and so the project has aligned with that naming. The terms "compatibility" and "interoperability" are typically distinguished by browser vendors, where compat refers to site compat, and interop refers to two or more browsers behaving the same. All browser vendors have agreed to focus on these areas, and everyone involved is excited to get started on making the experience of developing for the web measurably better. The benchmark focuses on 15 areas, identified by developers as being particularly troublesome when they are missing or have compatibility issues across browsers. Interop 2022 is a benchmark, agreed on by representatives of three major browser implementations, and developed through a process of public nomination and review with input from supporters Apple, Bocoup, Google, Igalia, Microsoft, and Mozilla. We were delighted to reach a score of over 90% across all implementations at the end of 2021! What is Interop 2022? # These reports gave us detailed and actionable information to address top challenges for developers with the web platform, and led to the Compat 2021 effort.Īmong other things, Compat 2021 led to creating a solid foundation for powerful features such as CSS grid ( 12% usage and steadily growing) and CSS flexbox ( 77% usage), including the gap property in flexbox, which solves a top pain point for developers when adopting new layout methods. It all started in 2019 #īack in 2019 Mozilla, Google, and others started a major effort to understand developers' pain points, in the form of the MDN Developer Needs Assessment surveys, and the deep-dive Browser Compatibility Report. In this article, find out how we got here, what the project focuses on, how success will be measured, and how you can track progress. Interop 2022 will improve the experience of developing for the web in 15 key areas. What will all this mean for developers?įor the first time ever, all major browser vendors, and other stakeholders, have come together to solve the top browsers compatibility issues identified by web developers.Measuring success and tracking progress.
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