diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1 @@
+{}
diff --git a/package-lock.json b/package-lock.json
index 516e72a..106e6be 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,8 @@
         "postcss-preset-env": "^8.5.0",
         "posthtml-modules": "^0.9.1",
         "posthtml-postcss": "^0.5.0",
-        "posthtml-urls": "^1.0.0"
+        "posthtml-urls": "^1.0.0",
+        "prettier": "3.1.1"
       }
     },
     "node_modules/@csstools/cascade-layer-name-parser": {
@@ -6227,6 +6228,21 @@
         "node": ">= 4"
       }
     },
+    "node_modules/prettier": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.1.1.tgz",
+      "integrity": "sha512-22UbSzg8luF4UuZtzgiUOfcGM8s4tjBv6dJRT7j275NXsy2jb4aJa4NNveul5x4eqlF1wuhuR2RElK71RvmVaw==",
+      "dev": true,
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
     "node_modules/pretty-hrtime": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/pretty-hrtime/-/pretty-hrtime-1.0.3.tgz",
diff --git a/package.json b/package.json
index cfa6b59..3f95974 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,8 @@
     "postcss-preset-env": "^8.5.0",
     "posthtml-modules": "^0.9.1",
     "posthtml-postcss": "^0.5.0",
-    "posthtml-urls": "^1.0.0"
+    "posthtml-urls": "^1.0.0",
+    "prettier": "3.1.1"
   },
   "dependencies": {
     "css-blank-pseudo": "^5.0.2",