[Website] The depth setting range is not large enough

[cconcolato]

Summary

There remains red arrows in box lists, even when you put the max value in the depth range

Increase the slider max value to make sure it covers every possibility.

Steps to reproduce

1. Open the coverage part
2. Set the slider to the max value

[DenizUgur]

The longest permutation we have has 11 box depth. I wanted to leave that setting within sensible limits. It can be increased for sure.