Are you using Ultimate Timeline and the Breeze Dark style?

[Powerpuncher]

Hit @valeth up on their thread, they are pretty responsive to bug reports/suggestions:

[Userstyle] WaniKani Breeze Dark

This is a third-party script/app and is not created by the WaniKani team. By using this, you understand that it can stop working at any time or be discontinued indefinitely. [Install directly with Stylus] A dark user style for WaniKani, to make learning at night more pleasant. Feedback and ideas are very appreciated. Hope you like it. Installation You can install by clicking the badge above (this requires the Stylus browser extension or any extension that can handle User CSS). …