diff --git a/src/constants/const.ts b/src/constants/const.ts
index 7337da31..55b19695 100644
--- a/src/constants/const.ts
+++ b/src/constants/const.ts
@@ -1,5 +1,5 @@
-export const VIEWPORT_W = 1280;
-export const VIEWPORT_H = 720;
+export const VIEWPORT_W = 900;
+export const VIEWPORT_H = 500;
 
 export const ONE_PERCENT_OF_VIEWPORT_W = VIEWPORT_W / 100;
 export const ONE_PERCENT_OF_VIEWPORT_H = VIEWPORT_H / 100;