fix(column-layout): wrap content column to prevent expanding

src/layouts/StickySideColumns.tsx

@@ -17,9 +17,11 @@ export const StickySideColumns = ({
       <div className={`${styles.sidesWrap} ${styles.files}`}>
         <div className={styles.sides}>{left}</div>
       </div>
+      <div>
         <div id="content-preview" className={styles.content}>
           {children}
         </div>
+      </div>
       <div className={styles.sidesWrap}>
         <div className={styles.sides}>{right}</div>
       </div>