---
id: S05
parent: M007
milestone: M007
provides:
  - Key moment cards render without text overflow — S06 mobile viewport fix can build on stable card layout
requires:
  []
affects:
  - S06
key_files:
  - frontend/src/App.css
key_decisions:
  - Used word-break: break-word for titles (wrap) vs text-overflow: ellipsis (truncate) since titles are meaningful content
patterns_established:
  - (none)
observability_surfaces:
  - none
drill_down_paths:
  - .gsd/milestones/M007/slices/S05/tasks/T01-SUMMARY.md
duration: ""
verification_result: passed
completed_at: 2026-03-30T19:42:38.680Z
blocker_discovered: false
---

# S05: Key Moment Card Text Overflow Fix

**Fixed key moment card text overflow — long filenames truncate with ellipsis, titles wrap gracefully, no horizontal bleed from sidebar cards.**

## What Happened

Applied four targeted CSS property changes to the `.technique-moment*` rules in `frontend/src/App.css`:

1. `overflow: hidden` on `.technique-moment` — clips any child content that escapes card bounds
2. `word-break: break-word` on `.technique-moment__title` — long titles wrap instead of overflowing (wrapping preferred over truncation since titles are meaningful content the user needs to read)
3. `max-width: 100%` on `.technique-moment__source` — the source filename now respects actual container width instead of the previous `max-width: 20rem` which could exceed the sidebar's inner width
4. `min-width: 0` on `.technique-moment__meta` — required for flex child truncation to work reliably; without this, flex items can refuse to shrink below their content size

Single task, single file. Frontend builds cleanly.

## Verification

Frontend build passes with zero errors (768ms). All four CSS properties confirmed present in the correct rules via grep and manual file inspection. overflow: hidden on .technique-moment (line 1517), word-break: break-word on .technique-moment__title (line 1526), max-width: 100% on .technique-moment__source (line 1548), min-width: 0 on .technique-moment__meta (line 1535).

## Requirements Advanced

None.

## Requirements Validated

None.

## New Requirements Surfaced

None.

## Requirements Invalidated or Re-scoped

None.

## Deviations

None.

## Known Limitations

None.

## Follow-ups

None.

## Files Created/Modified

- `frontend/src/App.css` — Added overflow: hidden, word-break: break-word, max-width: 100%, and min-width: 0 to technique-moment card CSS rules
