CSS News June 2020 Rachel Andrew, Fronteers Slides & resources https://noti.st/rachelandrew

Gaps for everyone Slides & resources https://noti.st/rachelandrew

The gap properties gap, row-gap, column-gap Slides & resources https://noti.st/rachelandrew

.flex { display: flex; margin: 0 -10px; } .flex > * { flex: 1 1 auto; margin: 0 10px; } Slides & resources https://noti.st/rachelandrew

.flex { display: flex; gap: 20px; } .flex > * { flex: 1 1 auto; } Slides & resources https://noti.st/rachelandrew

What happened to grid-gap? Slides & resources https://noti.st/rachelandrew

Box alignment The specification for alignment and space distribution across all layout methods. Slides & resources https://noti.st/rachelandrew

The grid- properties are maintained as aliases. Slides & resources https://noti.st/rachelandrew

Can we detect Flexbox gap support with Feature Queries? Slides & resources https://noti.st/rachelandrew

@supports (display: grid) { .grid { /* grid things here */ } } Slides & resources https://noti.st/rachelandrew

@supports (gap: 20px) { .flex { /* matches due to support for gap in grid. */ } } Slides & resources https://noti.st/rachelandrew

Aspect Ratios Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

The aspect-ratio property https://developer.mozilla.org/en-US/docs/Web/CSS/aspect-ratio Slides & resources https://noti.st/rachelandrew

.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); } .grid > * { aspect-ratio: 1 / 1; transform: rotate(0.1turn); } Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

Internal mapping Modern browsers use the width & height attributes to internally map image aspect ratios to prevent loading shifts. Slides & resources https://noti.st/rachelandrew

Masonry in CSS Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

.masonry { display: grid; gap: 20px; grid: masonry / repeat(auto-fill, minmax(250px, 1fr)); } Slides & resources https://noti.st/rachelandrew

Does masonry belong in the CSS Grid Spec? https://rachelandrew.co.uk/archives/2020/05/05/does-masonry-belong-in-the-css-grid-specification/ Slides & resources https://noti.st/rachelandrew

Subgrid Slides & resources https://noti.st/rachelandrew

Subgrid examples https://gridbyexample.com/examples/#css-grid-level-2-examples Slides & resources https://noti.st/rachelandrew

… a team at Microsoft Edge are working on rearchitecting Chromium’s Grid support to use the new LayoutNG engine - and as part of this are intending to add subgrid support! Slides & resources https://noti.st/rachelandrew

prefers_reduced_data Slides & resources https://noti.st/rachelandrew

@media (prefers-reduced-data: no-preference) { .hero { /* download large image */ } } Slides & resources https://noti.st/rachelandrew

User preference media features Part of Media Queries Level 5 Slides & resources https://noti.st/rachelandrew

::marker Slides & resources https://noti.st/rachelandrew

li:first-child { background-color: rgb(74, 112, 122); color: #fff; } li:first-child::marker { color: black; } Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

h1 { display: list-item; } h1::marker { content: “🥦🥦”; } Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

Anyone can contribute to specifications You don’t need to be an Invited Expert or representative. Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

Everyone is allowed to contribute You don’t need permission, or to be qualified in some way. Slides & resources https://noti.st/rachelandrew

Read and comment on specification issues https://github.com/w3c/csswg-drafts/issues Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

Show use cases As with any software development, real use cases are valuable. Slides & resources https://noti.st/rachelandrew

Contribute examples and diagrams to specifications Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

WICG Discourse https://discourse.wicg.io/ Slides & resources https://noti.st/rachelandrew

It will probably take longer than you think for changes to be made! Patience is required for web platform contributions. Slides & resources https://noti.st/rachelandrew

Raise browser bugs Fix bugs, or request that features are implemented. Slides & resources https://noti.st/rachelandrew

Learn to create a Reduced Test Case Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

Test and offer feedback on features behind flags. This is the best time to make changes to a spec. Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

Web Platform Tests Help us test the web platform Slides & resources https://noti.st/rachelandrew

Slides & resources https://noti.st/rachelandrew

Many people who work on CSS started by writing tests. Slides & resources https://noti.st/rachelandrew

Comment on spec issues, raise new issues, contribute examples, raise browser bugs, write tests. Slides & resources https://noti.st/rachelandrew

Thank you! Slides & resources https://noti.st/rachelandrew