FIx theme, reduce button size

angular.json

@@ -21,7 +21,8 @@
             "polyfills": [
             ],
             "tsConfig": "tsconfig.app.json",
-            "assets": ["src/assets"]
+            "assets": ["src/assets"],
+            "styles": ["src/styles.scss"]
           },
           "configurations": {
             "production": {
@@ -50,7 +51,7 @@
         "serve": {
           "builder": "@angular/build:dev-server",
           "options": {
-            "port": 1420
+            "port": 4200
           },
           "configurations": {
             "production": {

src/app/message.model.ts

@@ -1,11 +0,0 @@
-import { Field as FieldDescriptor } from "protobufjs";
-
-interface Field<T> {
-  fieldDescriptor: FieldDescriptor;
-  value?: T;
-}
-
-interface Message {
-  // messageDescriptor:
-  fields: Field<any>[];
-}

src/styles.scss

@@ -15,4 +15,5 @@ body {
   margin: 0;
   --mat-tree-node-min-height: 24px;
   --mat-tree-node-text-size: 14px;
+  --mdc-icon-button-state-layer-size: 24px;
 }