Update the filter property for horizontal rule elements to increase brightness from 0.2 to 0.4. Replit-Commit-Author: Agent Replit-Commit-Session-Id: 5e584ab0-c340-4432-97ef-1972582b60e9 Replit-Commit-Checkpoint-Type: full_checkpoint Replit-Commit-Event-Id: 400eda3d-7c96-402b-a3f8-0a4db477df32 Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/d0a1d46d-d203-4308-bc6a-312ac7c0243b/5e584ab0-c340-4432-97ef-1972582b60e9/GsoVmmG