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Modern Drupal 10/11 theme built with native CSS Grid and zero external dependencies.

Isosceles is a flexible, lightweight contrib theme designed for modern Drupal projects.

  • 24 configurable regions
  • Native CSS Grid layout (no framework dependency)
  • Self-hosted assets (no external CDNs)
  • Accessible markup and semantic templates
  • SVG icon system (no icon fonts)

Compatible with Drupal 10 and Drupal 11.

Originally created in 2018 and modernized for Drupal 10/11 in 2026.

Activity

Total releases
1
First release
Feb 2026
Latest release
3 months ago
Release cadence
Stability
100% stable

Releases

Version Type Release date
2.0.0 Stable Feb 22, 2026