Some lesson call-out boxes play playful effects such as a shake, a crash or confetti. They are on by default.
- Open any lesson.
- Find the small switch under the lesson title that says Silly effects: on.
- Press it. It changes to "Silly effects: off".
- Your choice is remembered in that browser. You may need to set it again on another device.
- If your device is set to reduce motion, the effects are already off.
- Turning them off changes only the animation. The lesson content stays the same.