As somebody simply sittin’ again watching CSS evolve, it looks like we’re at one of many hottest moments of innovation in CSS historical past. It was actually one thing once we obtained flexbox throughout all browsers, and never terribly lengthy after, grid. They modified the sport from CSS feeling like a clumsy assortment of methods to one thing extra wise and of the occasions.

That feeling retains getting an increasing number of true on a regular basis. Simply within the final quick whereas, right here’s a listing of issues occurring.

⚠️🤷 The syntax may not be precisely like several of the snippets under this once they ship for actual. 🤷⚠️

Native Nesting

Native Nesting has turn into a First Public Working Draft, which means it’s quite a bit nearer to changing into an actual factor than ever earlier than. Lots of people use preprocessors only for the comfort of nesting and this needs to be useful for these seeking to simplify their construct instruments to keep away from that.

I particularly like how one can nest conditional guidelines.

.card {
  & .title { }
  & .physique { }

  @media (min-inline-size > 1000px) {
    & { }
  }

  @nest physique.darkish & { }
}

I’ve heard whispers of this being a workable thought too, which avoids requiring the & on easy selectors and likewise avoids @nest in any respect.

.card {{
  .title { }
  .physique { }

  physique.darkish & { }
}}

Container Queries

Container Queries is simply an Editor’s Draft (CSS Containment Module Degree 3) in the meanwhile, however they have already got an implementation in Chrome (with a flag). These are an enormous deal as they permit us to make styling choices based mostly on the scale of the container itself, which in at the moment’s component-driven world, is only a completely good thought.

See the code for a easy instance website (may look bizarre in case you don’t have the flag on in Chrome).

/* Set containment on the dad or mum you are querying */
.card-container {
  /* Each work proper now, unsure which is true */
  comprise: fashion structure inline-size;
  container: inline-size;
}
.card {
  show: flex;
}
@container (max-width: 500px) {
  /* Should fashion a baby, not the container */
  .card {
    flex-direction: column;
  }
}

Container Models

Container Models have a draft spec as nicely, which, to me, practically doubles the usefulness of container queries. The thought is that you’ve got a unit that’s based mostly on the scale of the container (width, top, or “inline-size” / “block-size”). I think about the qi unit is essentially the most helpful.

Hopefully quickly, we’ll be writing container-scoped CSS that kinds itself based mostly on the scale of itself and might move that measurement for different properties to make use of inside. The font-size property is a straightforward instance of how helpful that is (fonts that scale in measurement based mostly on their container), however I’m positive container models will likely be used for all types of stuff, like hole, padding, and who is aware of what all else.

/* Set containment on the dad or mum you are querying */
.card-container {
  /* Each work proper now, unsure which is true */
  comprise: fashion structure inline-size;
  container: inline-size;
}
.card h2 {
  font-size: 1.5rem; /* fallback */
}
@container sort(inline-size) {
  .card h2 {
    font-size: clamp(14px, 1rem + 2qi, 56px)
  }
}

Cascade Layers

Cascade Layers (in Working Draft spec) introduces a complete new paradigm for which CSS selectors win within the Cascade. Proper now it’s largely a specificity contest. Selectors with the very best specificity win, solely dropping out to inline kinds and particular guidelines with !vital clauses. However with layers, any matching selector on the next layer would win.

@layer base;      
@layer theme;   
@layer utilities; 

/* Reset kinds with no layer (tremendous low) */
* { box-sizing: border-box; }

@layer theme { 
  .card { background: var(--card-bg); }
}

@layer base { 
  /* Most kinds? */
}

@layer utilities {
  .no-margin { margin: 0; }
}

@when

Tab Atkins’ proposal for CSS When/Else Guidelines has been accepted and is a method of expressing @media and @helps queries in such a method which you can far more simply specific else situations. Whereas media queries have already got some skill to do logic, doing mutually unique queries has lengthy been exhausting to specific and this makes it quite simple.

@when media(width >= 400px) and media(pointer: fantastic) and helps(show: flex) {
  /* A */
} @else helps(caret-color: pink) and helps(background: double-rainbow()) {
  /* B */
} @else {
  /* C */
}

Scoping

The thought of Scoped Types (this one is an Editor’s Draft) is that it supplies a syntax for writing a block of kinds that solely apply to a sure selector and inside, but additionally have the power to cease the scope, making a scope donut.

My favourite a part of all that is the “proximity” power stuff. Miriam explains like this:

.light-theme a { coloration: purple; }
.dark-theme a { coloration: plum; }
<div class="dark-theme">
  <a href="https://css-tricks.com/css-is-going-gosh-darned-hog-wild-i-tell-ya-what/#">plum</a>

  <div class="light-theme">
    <a href="https://css-tricks.com/css-is-going-gosh-darned-hog-wild-i-tell-ya-what/#">additionally plum???</a>
  </div>
</div>

Good level proper?! There isn’t any nice method to specific that you really want the proximity of that hyperlink to the .light-theme to win. Proper now, the truth that the specificity of each themes is similar, however .dark-theme comes after — so it wins. Hopefully scoped kinds helps with this angle, too.

@scope (.card) to (.content material) {
  :scope {
    show: grid;
    grid-template-columns: 50px 1fr;
  }
  img {
    filter: grayscale(100%);
    border-radius: 50%;
  }
  .content material { ... }
}
/* Proximity assist! */
@scope (.light-theme) {
  a {
    coloration: purple;
  }
}

@scope (.dark-theme) {
  a {
    coloration: plum;
  }
}

You’ll be able to’t use something on this record proper now in your manufacturing web sites. In any case these years trying to comply with this sort of factor, I stay ignorant to the way it all in the end goes. I believe the specs should be completed and agreed upon first. Then browsers decide them up, hopefully multiple. And as soon as they’ve, then I believe the specs could be finalized?

I dunno. Possibly a few of it would die. Possibly a few of it would occur tremendous quick, and a few tremendous gradual. Possible, a few of it would drop in some browsers however not others. Hey, no less than we now have evergreen browsers now in order that when issues do drop, it occurs quick. I really feel like proper now we’re in a stage the place a lot of the largest and greatest CSS options are supported throughout all browsers, however with all this coming, we’ll be headed right into a section the place assist for the latest-and-greatest will likely be far more spotty.

#CSS #GoshDarned #Hog #Wild

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