fix exercise left panel
fix exercise left panel

KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3