Modern CSS Techniques for 2025

CSS continues to evolve rapidly, bringing powerful new features that make web development more efficient and creative.

Container Queries

Container queries allow you to style elements based on their container's size rather than the viewport:

.card-container {
  container-type: inline-size;
  container-name: card;
}

@container card (min-width: 300px) {
  .card {
    display: flex;
    flex-direction: row;
  }
}

CSS Grid Level 2

Enhanced grid capabilities for more complex layouts:

.grid {
  display: grid;
  grid-template-columns: subgrid;
  grid-template-rows: masonry;
}

Modern Color Functions

New color functions provide better color manipulation:

.element {
  /* Color mixing */
  background: color-mix(in srgb, blue 50%, red);

  /* Relative colors */
  border-color: rgb(from var(--primary) r g b / 0.5);
}

Cascade Layers

Organize your CSS with explicit cascade control:

@layer reset, base, components, utilities;

@layer components {
  .button {
    padding: 1rem;
    border-radius: 0.5rem;
  }
}

View Transitions API

Smooth transitions between page states:

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.5s;
}

Conclusion

These modern CSS techniques enable more maintainable, performant, and visually appealing web applications. Start experimenting with them today!