Update README.md

Author: SinnyLang

source/blogs/tech/2025-06-26-flower-dance/README.md

@@ -20,7 +20,7 @@ V:v2 bass
 [V:v2][|E,B,EF G4|F,CFG A4 |G,DGA B4 | [G,8DG] |]
 ```
 
-```abcjs max-width=640
+```abcjs max-width=640 align=center controls
 X:1
 T:Flower Dance
 T:DJ Okawari
@@ -36,4 +36,4 @@ V:v2 bass
 [V:v2][|E,B,EF G4|F,CFG A4 |G,DGA B4 | z8 |]
 [V:v1][|dcgc dcGc|dcgc dcGc|dcgc dcGc|[g8ac']|]
 [V:v2][|E,B,EF G4|F,CFG A4 |G,DGA B4 | [G,8DG] |]
-```
+```