added css for scale

Author: SO1213

triangulator.css

@@ -24,6 +24,14 @@ input {
   border: 1px solid #ccc;
 }
 
+scale {
+   margin: 0 5px;
+  padding: 8px;
+  width: 100px;
+  border-radius: 6px;
+  border: 1px solid #1c1f3c;
+}
+
 button {
   padding: 10px 20px;
   border: none;