Create static/style.css

static/style.css

@@ -0,0 +1,21 @@
+body {
+    font-family: Arial, sans-serif;
+    padding: 40px;
+    background-color: #f7f7f7;
+}
+.container {
+    max-width: 600px;
+    margin: auto;
+}
+textarea {
+    width: 100%;
+    height: 100px;
+}
+button {
+    padding: 10px 20px;
+}
+.result {
+    margin-top: 20px;
+    padding: 10px;
+    background: #e0ffe0;
+}