diff --git a/src/model/quizSettings.ts b/src/model/quizSettings.ts
index 88befe6a..dc44ec9d 100644
--- a/src/model/quizSettings.ts
+++ b/src/model/quizSettings.ts
@@ -11,23 +11,27 @@ export const quizSetupSteps = {
     10: { displayStep: 7, text: "Запустите рекламу" },
 } as const;
 
-export const maxQuizSetupSteps = Math.max(...Object.keys(quizSetupSteps).map(parseInt));
+export const maxQuizSetupSteps = Math.max(...Object.keys(quizSetupSteps).map(n => parseInt(n)));
 
 export const maxDisplayQuizSetupSteps = Math.max(...Object.values(quizSetupSteps).map(v => v.displayStep));
 
 export type QuizSetupStep = keyof typeof quizSetupSteps;
 
+export type QuizStartpageType = "standard" | "expanded" | "centered";
+
+export type QuizStartpageAlignType = "left" | "right" | "center";
+
 export interface QuizConfig {
     type: "quiz" | "form";
     logo: string;
     noStartPage: boolean;
-    startpageType: "standard" | "expanded" | "centered";
+    startpageType: QuizStartpageType;
     startpage: {
         description: string;
         button: string;
-        position: string;
+        position: QuizStartpageAlignType;
         background: {
-            type: string;
+            type: null | "image" | "video";
             desktop: string;
             mobile: string;
             video: string;
@@ -54,7 +58,7 @@ export const defaultQuizConfig: QuizConfig = {
         button: "",
         position: "left",
         background: {
-            type: "none",
+            type: null,
             desktop: "",
             mobile: "",
             video: "",