feat: Adds purchase-order form only renders a new row rather than whole table.

Public/css/main.css

@@ -87,6 +87,10 @@ td, th {
   padding: 5px 15px;
 }
 
+table th {
+  color: #00ffcc;
+}
+
 input[type=submit] {
   padding: 5px 20px;
 }