I always considered subjecting humans to CSS to be a form of torture. Actually, it's worse than you said. Imagine if you had to do this, without knowing what a clock looks like.

Here is the fix for the "GPT-2" version:

    .hand {
      top: 48.5%;
    }

    .hour-hand {
      left: 20%;
    }

    .minute-hand {
      left: 10%;
    }

    .second-hand {
        left: 5%;
    }