now project is multiplatform and correctly working

src/jsMain/kotlin/dev/inmo/jsuikit/elements/Flex.kt

@@ -0,0 +1,24 @@
+package dev.inmo.jsuikit.elements
+
+import androidx.compose.runtime.Composable
+import dev.inmo.jsuikit.modifiers.UIKitModifier
+import dev.inmo.jsuikit.modifiers.include
+import org.jetbrains.compose.web.dom.*
+import org.w3c.dom.HTMLDivElement
+
+@Composable
+fun Flex(
+    vararg modifiers: UIKitModifier,
+    attributesCustomizer: AttrBuilderContext<HTMLDivElement> = {},
+    filler: @Composable ElementScope<HTMLDivElement>.() -> Unit
+) {
+    Div(
+        {
+            classes("uk-flex")
+            include(*modifiers)
+            attributesCustomizer()
+        }
+    ) {
+        filler()
+    }
+}