dim_inactive = true;
          dim_strength = 0.08;

          # Normal (tiled) windows - slight transparency.
          "opacity 0.97 0.97, floating:0"

          "opacity 1.0 override, class:^(zen-browser)$"  # Browser always opaque.
          "opacity 1.0 override, title:^(.*)(YouTube|Twitch)(.*)$"  # Videos opaque.

          # Exceptions - always opaque (must come after general rules).
          "opaque, class:^(zen)(.*)$"