Blog/February 20, 2026

Yumma CSS 3.15

Introducing container queries, standalone scale properties, refreshed box shadows & more.

Yumma CSS 3.15

Container Queries

Container Queries allow you to style elements based on the size of their parent container.

<div class="w-half @sm:w-full">
Responsive based on container size!
</div>

Standalone Scale

Following our transition to standalone properties for rotate, we've now refactored scale to use the standalone property.

PrefixProperty
s-scale
sx-scale-x
sy-scale-y
sz-scale-z

Refreshed Box Shadows

We've completely overhauled our box shadow system. Shadows are now split into Outset & Inset categories with refined values from xs to 3xl.

<!-- Outset Shadow -->
<div class="bs-o-md ...">...</div>
<!-- Inset Shadow -->
<div class="bs-i-sm ...">...</div>

New Utilities

3.15 adds several new layout & interactivity utilities:

  • Overscroll Behavior
  • Mix Blend Mode
  • Empty Cells
  • Word Break
  • Backdrop Grayscale

Upgrade

Check the Upgrading Guide for a full list of utility renames & removals.

Terminal window
pnpm add yummacss@latest