cssnano · ludofischer · May 6, 2025 · May 5, 2025
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
@@ -72,3 +72,4 @@ Thanks goes to these wonderful people:
 - Xiaojun Zhou
 - Seth Falco
 - Seiya
+- Aleksandr Kondrashov
diff --git a/packages/postcss-convert-values/src/index.js b/packages/postcss-convert-values/src/index.js
@@ -157,7 +157,7 @@ function shouldKeepZeroUnit(decl, browsers) {
         (node) =>
           node.type === 'decl' &&
           node.prop.toLowerCase() === 'syntax' &&
-          node.value === "'<percentage>'"
+          (node.value === "'<percentage>'" || node.value === '"<percentage>"')
       )) ||
     keepWhenZero.has(lowerCasedProp)
   );

diff --git a/packages/postcss-convert-values/test/index.js b/packages/postcss-convert-values/test/index.js
@@ -504,6 +504,14 @@ test(
   )
 );
 
+test(
+  `should not strip the percentage from 0 in @property, for initial-value (syntax string in double quotes)`,
+  processCSS(
+    `@property --percent{syntax:"<percentage>";inherits:false;initial-value:0%;}`,
+    `@property --percent{syntax:"<percentage>";inherits:false;initial-value:0%;}`
+  )
+);
+
 test(
   'should not strip the percentage from background-color',
   passthroughCSS('background-color:color-mix(#000, #FFF 0%);')

diff --git a/packages/postcss-minify-selectors/test/index.js b/packages/postcss-minify-selectors/test/index.js
@@ -109,7 +109,7 @@ test(
   processCSS(
     '.item1, .item2, .item10, .item11{color:blue}',
     '.item1,.item2,.item10,.item11{color:blue}',
-    { sort: false },
+    { sort: false }
   )
 );