Crafting UI

Modern CSS and compatibility

Bleeding Edge CSS

Adopting modern CSS features enable developers to:

Reduce development time.
Improve code efficiency, readability, and maintainability.
Improve performance.
Create beautiful user interfaces that are seamless, efficient, and accessible.

https://developer.chrome.com/blog/css-ui-ecommerce

How do you center a div?

😩

.element {
  display: flex;
  gap: 1.25ch;
  align-items: center;
}

How do you center this?

😩

Overskrift

Morbi tortor mi, semper id magna quis, auctor auctor purus. Nam pellentesque vulputate lectus, et euismod est tincidunt sed.

Overskrift

line box

Overskrift

half leading

giraf

https://medium.com/microsoft-design/leading-trim-the-future-of-digital-typesetting-d082d84b202

Figma: Vertical trim

text-box-trim

h1 { 
 text-box-trim: trim-both;
 text-box-edge: cap alphabetic;
}

text-box-trim

h1 { 
 /*text-box-trim: trim-both;
 text-box-edge: cap alphabetic;*/
 text-box: cap alphabetic;
}

text-box-trim

h1 {
  text-box: trim-both cap alphabetic;
}

h1 {
  text-box: trim-start cap alphabetic;
}

Prøv det selv

🥹

Overskrift

Morbi tortor mi, semper id magna quis, auctor auctor purus. Nam pellentesque vulputate lectus, et euismod est tincidunt sed.

text-box-trim

margin-trim

/*article {
  > * + * {
    margin-top: 1rlh;
  }
}*/

article {
  margin-trim: block;
  
  > * {
    margin-block: 1rlh;
  }
}

margin-trim

lh & rlh

Vertical rythm

article {
  padding: 2rlh;
  gap: 1rlh;
}

https://12daysofweb.dev/2024/css-margin-trim-line-height-units/

lh & rlh

Multi-line colors

Units

in CSS

text-wrap

h1,
h2,
h3 {
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

Initial letter

p:first-letter {
  initial-letter: 3;
}

Initial letter

Kompatibilitet

Mål: Vide, hvordan vi håndterer det

caniuse

Kompatibilitet

Strategier

Progressive enhancement
- Sikrer en basisoplevelse for alle og forbedrer, hvor muligt
Graceful degradation
- Implementér det bedste først og fald elegant tilbage

.element {
  background: #00d600;
  background: oklch(70% 100% 150);
}

fallbacks

ikke-kritiske forbedringer

p {
  text-wrap: pretty;
}

ikke-kritiske forbedringer

details {
  interpolate-size: allow-keywords;
}

[open]::details-content {
  block-size: calc-size(auto, size);
}

ikke-kritiske forbedringer

@view-transition {
  navigation: auto;
}

ikke-kritiske forbedringer

p {
  text-wrap: pretty;
}

form {
  accent-color: #5000ca;
}

@view-transition {
  navigation: auto;
}

details {
  interpolate-size: allow-keywords;
}

[open]::details-content {
  block-size: calc-size(auto, size);
}

Se efter understøttelse

h2 {
  text-box: trim-both cap alphabetic;

  @supports not (text-box-trim: trim-both) {
    margin-top: calc(.5cap - .5lh);
  }
}

Se efter understøttelse

@supports (view-timeline: --my-timeline) {
  ...
}

@supports selector(::details-content) {
  
}

@supports not (interpolate-size: allow-keywords) {
  [open]::details-content {
    height: 150px;
    overflow-y: scroll;
  }
}

@supports

<script src="https://flackr.github.io/scroll-timeline/dist/scroll-timeline.js"></script>

Polyfills eller andre teknikker

.element {
  animation: --move linear both;
  animation-timeline: view();
}

Polyfills eller andre teknikker

if (!CSS.supports('animation-timeline: scroll()')) {
  // importer GSAP

Polyfills eller andre teknikker

https://una.im/select-updates/

<select>

Øvelse

Animated Accordion w/ details/summary

Find branchen "details-accordion" på vores GitHub-repository