Fixes

src/jvmMain/kotlin/IndexHtml.kt

@@ -2,6 +2,7 @@ import kotlinx.html.HTML
 import kotlinx.html.InputType
 import kotlinx.html.body
 import kotlinx.html.div
+import kotlinx.html.h3
 import kotlinx.html.head
 import kotlinx.html.id
 import kotlinx.html.iframe
@@ -67,23 +68,46 @@ fun HTML.index() {
         id = "harmonics"
         type = InputType.number
         value = "3"
-        min = "1"
+        min = "0"
         max = "10"
       }
     }
+    h3 {
+      + "Node 1"
+    }
     div {
       input {
-        id = "note_c3"
+        id = "note_c3_1"
         type = InputType.button
         value = "C3"
       }
       input {
-        id = "note_e3"
+        id = "note_e3_1"
         type = InputType.button
         value = "E3"
       }
       input {
-        id = "note_g3"
+        id = "note_g3_1"
+        type = InputType.button
+        value = "G3"
+      }
+    }
+    h3 {
+      + "Node 2"
+    }
+    div {
+      input {
+        id = "note_c3_2"
+        type = InputType.button
+        value = "C3"
+      }
+      input {
+        id = "note_e3_2"
+        type = InputType.button
+        value = "E3"
+      }
+      input {
+        id = "note_g3_2"
         type = InputType.button
         value = "G3"
       }