diff --git a/packages/blog/styles/theme.ts b/packages/blog/styles/theme.ts
index b3f324b..03e6e01 100644
--- a/packages/blog/styles/theme.ts
+++ b/packages/blog/styles/theme.ts
@@ -10,6 +10,14 @@ const color = {
   grey400: '#737373',
 } as const
 
+export const breakpoint = {
+  sm: '640px',
+  md: '768px',
+  lg: '1024px',
+  xl: '1280px',
+  xxl: '1536px',
+} as const
+
 export const theme = {
   color,
 }