diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..fa007e9
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,18 @@
+{
+  "name": "accueil-jouf",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "devDependencies": {
+        "flexbox-grid-mixins": "^0.3.4"
+      }
+    },
+    "node_modules/flexbox-grid-mixins": {
+      "version": "0.3.4",
+      "resolved": "https://registry.npmjs.org/flexbox-grid-mixins/-/flexbox-grid-mixins-0.3.4.tgz",
+      "integrity": "sha512-RjtmsfUD40vqTMhHZ5B5Aomxs9SqedKJTxixkkde972qMoIxxv1csdU3kJrdqGscbvBI53waS7Exwbu9TostCg==",
+      "dev": true
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..00d1655
--- /dev/null
+++ b/package.json
@@ -0,0 +1,5 @@
+{
+  "devDependencies": {
+    "flexbox-grid-mixins": "^0.3.4"
+  }
+}