Introduce CSS transformation function rotate

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/css/properties/transform.kt

@@ -21,6 +21,7 @@ fun matrix3dTransform(
 ) = TransformFunction { "matrix3d($a1, $b1, $c1, $d1, $a2, $b2, $c2, $d2, $a3, $b3, $c3, $d3, $a4, $b4, $c4, $d4)" }
 
 fun perspectiveTransform(d: CSSLengthValue) = TransformFunction { "perspective($d)" }
+fun rotateTransform(a: CSSAngleValue) = TransformFunction { "rotate($a)" }
 
 fun StyleBuilder.transform(transformFunction: TransformFunction) {
     property("transform", transformFunction.apply())

web/core/src/jsTest/kotlin/css/TransformTests.kt

@@ -38,4 +38,14 @@ class TransformTests {
 
         assertEquals("perspective(3cm)", nextChild().style.transform)
     }
+
+    @Test
+    fun rotate() = runTest {
+        composition {
+            Div({ style { transform(rotateTransform(3.deg)) } })
+        }
+
+        assertEquals("rotate(3deg)", nextChild().style.transform)
+    }
+
 }