diff --git a/src/index.ts b/src/index.ts
index 3a0e342..5393e33 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -56,8 +56,10 @@ const postCSSPlugin = ({
     });
 
     build.onResolve(
-      { filter: /.\.(css|sass|scss|less|styl)$/, namespace: "file" },
+      { filter: /.\.(css|sass|scss|less|styl)$/ },
       async (args) => {
+        if (args.namespace !== "file" && args.namespace !== "") return;
+
         const sourceFullPath = path.resolve(args.resolveDir, args.path),
           sourceExt = path.extname(sourceFullPath),
           sourceBaseName = path.basename(sourceFullPath, sourceExt),
@@ -65,13 +67,10 @@ const postCSSPlugin = ({
           sourceRelDir = path.relative(path.dirname(rootDir), sourceDir),
           isModule = sourceBaseName.match(/\.module$/),
           tmpDir = path.resolve(tmpDirPath, sourceRelDir),
-          tmpFilePath = path.resolve(
-            tmpDir,
-            `${sourceBaseName}-tmp-${Date.now()}-${sourceExt.replace(".", "")}${
-              isModule ? ".module" : ""
-            }.css`
-          );
+          tmpFilePath = path.resolve(tmpDir, `${sourceBaseName}.css`);
 
+        console.log(tmpDir);
+        console.log(tmpFilePath);
         await ensureDir(tmpDir);
 
         const fileContent = await readFile(sourceFullPath);
diff --git a/test/index.js b/test/index.js
index 297f39f..6e980ef 100644
--- a/test/index.js
+++ b/test/index.js
@@ -5,7 +5,7 @@ const autoprefixer = require("autoprefixer"),
 
 describe("PostCSS esbuild tests", () => {
   it("Works with basic CSS imports", (done) => {
-    test("basic")
+    test("tests/basic.ts")
       .then((res) => {
         assert(res);
         done();
@@ -13,7 +13,7 @@ describe("PostCSS esbuild tests", () => {
       .catch(done);
   });
   it("Works with preprocessors", (done) => {
-    test("preprocessors")
+    test("tests/preprocessors.ts")
       .then((res) => {
         assert(res);
         done();
@@ -21,7 +21,15 @@ describe("PostCSS esbuild tests", () => {
       .catch(done);
   });
   it("Works with CSS modules", (done) => {
-    test("modules")
+    test("tests/modules.ts")
+      .then((res) => {
+        assert(res);
+        done();
+      })
+      .catch(done);
+  });
+  it("Works with CSS as entrypoint", (done) => {
+    test("tests/styles.css")
       .then((res) => {
         assert(res);
         done();
@@ -30,9 +38,9 @@ describe("PostCSS esbuild tests", () => {
   });
 });
 
-function test(test) {
+function test(entryPoint) {
   return build({
-    entryPoints: [`tests/${test}.ts`],
+    entryPoints: [entryPoint],
     bundle: true,
     outdir: "dist",
     plugins: [
diff --git a/test/tests/styles.css b/test/tests/styles.css
new file mode 100644
index 0000000..65ec989
--- /dev/null
+++ b/test/tests/styles.css
@@ -0,0 +1,6 @@
+.example {
+  display: grid;
+  transition: all 0.5s;
+  user-select: none;
+  background: linear-gradient(to bottom, white, black);
+}