System Update: CSS Logic Module Installed

The Era of
Conditional Styling

Logic without JavaScript. Responsiveness without media blocks.
Welcome to the biggest shift in CSS history.

Enter The Lab

01. The Syntax Lab

Interact with the controls to see how style() queries transform the object in real-time.

IDLE
// Render Output
--STATUS (STATE LOGIC)
--SHAPE (GEOMETRY LOGIC)
LIVE CSS LOGIC 
.element {
  background: if(
    style(--status: 'success'): #00f3ff;
    style(--status: 'error'): #ff0055;
    else: #334155
  );
  
  border-radius: if(
    style(--shape: 'circle'): 50%;
    else: 12px
  );
}

Three Ways to Use if()

1. Style Queries

The "React Prop" of CSS. Style elements based on the value of a Custom Property variable.

width: if(style(--full: true): 100%; else: 50%);

2. Inline Media

Define responsiveness directly on the property. No more jumping to the bottom of the file.

font-size: if(media(width < 600px): 14px; else: 18px);

3. Feature Supports

Progressively enhance your styles without massive @supports blocks wrapper.

color: if(supports(color: lch(0 0 0)): lch(...); else: #555);

02. Real-World Use Case

A component that restructures itself based on its width using if(media(...)).

SIMULATE WIDTH: 800px

Sarah Connor

Full Stack Developer

Building the resistance against bad CSS.

COMMIT STATUS
98% Green
LATEST DEPLOY
2m ago

Logic: if(media(width < 400px): flex-direction: column; ...)