⚡ FSCSS Ultra-Shorthand Animations — Assign Keyframes in One Line

FSCSS isn’t just a CSS shortcut — it’s a compression engine for styling.
One of the coolest features is how you can define @keyframes and assign animations to multiple selectors in one single shorthand line.

Here’s a clean example.

---

Ultra-Shorthand @keyframes Assignment

Instead of writing long CSS like:

@keyframes trans {
  from { 
width: 0; 
height: 0; 
background: red;
 }
  to { 
width: 200px; 
height: 200px; 
background: blue; 
}
}

.box, .card {
  animation: trans 3s ease-in infinite alternate;
}

FSCSS lets you compress all of that into this:

$(@keyframes trans, .box, .card &[3s ease-in infinite alternate]){
  from {
    %2(width, height [: 0;]) 
    background: red;
  } 
  to {
    %2(width, height [: 200px;])
    background: blue;
  }
}

And that’s it.
One line declares:

• The keyframes name

• The selectors (.box, .card)

• The animation settings

• And the full animation body

All wrapped inside $().

---

🧩 Breakdown

✔ Declare @keyframes, selectors, and animation timing together:

$(@keyframes trans, .box, .card &[3s ease-in infinite alternate])

✔ %2() sets two properties at once:

%2(width, height [: 0;])
%2(width, height [: 200px;])

✔ Clean from → to animation

---

Quick try

<script src="https://cdn.jsdelivr.net/npm/fscss@1.1.11/exec.min.js" defer>
</script>

<style>
div{
  margin: 10px;
}
$(@keyframes trans, .box, .card &[3s ease-in infinite alternate]){
  from {
    %2(width, height [: 0;]) 
    background: red;
  } 
  to {
    %2(width, height [: 200px;])
    background: blue;
  }
}
</style>

<div class="box">
</div>

<div class="card">
</div>

---

💙 Why This Is Useful

Write animations faster

Assign animations to many elements at once

Avoid repetitive animation: ... lines

Shrink your CSS dramatically

Keep your code clear and elegant

If you build UI components, loaders, or hover effects often, this technique saves minutes of typing on every project.

---

FSCSS takes classic CSS features (like keyframes) and turns them into compact, flexible super-syntax.
If you enjoy writing beautiful animations with less noise, this shorthand style is a game-changer.

More tips coming soon 😎🔥

---