Modern CSS Features | :has(), Container Queries, clamp() & Layout Tools
Master modern CSS techniques like :has(), container queries, clamp(), and advanced layout tools for responsive and maintainable designs.
Modern CSS Features | :has(), Container Queries, clamp() & Layout Tools
Modern CSS has crossed a major milestone.
We no longer write CSS only to style elements.
We now respond to layout, context, and state directly in CSS.
This advanced lesson covers the most important modern CSS features:
:has() , container queries , clamp() , and modern layout tools.
Each section explains how it works , why it matters , and includes
live editable examples .
Why Modern CSS Is a Big Shift
Old CSS was passive.
It reacted only to viewport size and hover states.
Modern CSS is contextual.
Parents can react to children Components can react to their own size Values can adapt smoothly without media queries Info!
Modern CSS reduces JavaScript by moving logic back into styles.
:has() — The Parent Selector
For the first time, CSS can style a parent based on its children.
This changes how UI states are handled.
Basic :has() Example ✏️ Edit ▶ Run <div class="card">
<input type="checkbox" />
<span>Select me</span>
</div>
<style>
.ca…
