feat(post) add header, fix style

frontend/app/blog/post/[id]/page.tsx

@@ -1,17 +1,18 @@
 import React from 'react';
-import Generate from '@/app/blog/post/[id]/generate';
+import PostCard from '@/app/blog/post/[id]/PostCard';
 import { MotionDiv } from '@/app/public/MotionDiv';
 
 function BlogReader({ params }: { params: { id: string } }) {
 
     return (
         <MotionDiv
+            className={ `max-w-full` }
             initial={ { y: 20, opacity: 0 } }
             animate={ { y: 0, opacity: 1 } }
             transition={ { ease: 'easeInOut', duration: 0.5 } }
         >
-            <div className={ `w-full` }>
-                <Generate id={ params.id } />
+            <div className={ `max-w-full` }>
+                <PostCard id={ params.id } />
             </div>
         </MotionDiv>
     );