---
id: T02
parent: S03
milestone: M010
provides: []
requires: []
affects: []
key_files: ["frontend/src/App.css"]
key_decisions: ["Applied animation via CSS selector list targeting existing page wrapper classes rather than adding .page-enter className to each TSX file"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "TypeScript compilation (tsc --noEmit) and Vite production build both passed with zero errors."
completed_at: 2026-03-31T06:27:10.192Z
blocker_discovered: false
---

# T02: Added @keyframes pageEnter (opacity 0→1, translateY 8→0, 250ms ease-out) applied to all 7 public page wrapper classes via CSS selector list

> Added @keyframes pageEnter (opacity 0→1, translateY 8→0, 250ms ease-out) applied to all 7 public page wrapper classes via CSS selector list

## What Happened
---
id: T02
parent: S03
milestone: M010
key_files:
  - frontend/src/App.css
key_decisions:
  - Applied animation via CSS selector list targeting existing page wrapper classes rather than adding .page-enter className to each TSX file
duration: ""
verification_result: passed
completed_at: 2026-03-31T06:27:10.192Z
blocker_discovered: false
---

# T02: Added @keyframes pageEnter (opacity 0→1, translateY 8→0, 250ms ease-out) applied to all 7 public page wrapper classes via CSS selector list

**Added @keyframes pageEnter (opacity 0→1, translateY 8→0, 250ms ease-out) applied to all 7 public page wrapper classes via CSS selector list**

## What Happened

Identified outermost wrapper classNames for all 7 public pages (.home, .topics-browse, .subtopic-page, .search-results-page, .creators-browse, .creator-detail, .technique-page). Added @keyframes pageEnter animation and applied it to all classes via a grouped CSS selector at the end of App.css. No TSX files modified — the animation triggers on mount automatically.

## Verification

TypeScript compilation (tsc --noEmit) and Vite production build both passed with zero errors.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `cd frontend && npx tsc --noEmit` | 0 | ✅ pass | 2000ms |
| 2 | `npm run build` | 0 | ✅ pass | 900ms |


## Deviations

None. Used the CSS-only approach (plan option #4) to avoid modifying 7 TSX files.

## Known Issues

None.

## Files Created/Modified

- `frontend/src/App.css`


## Deviations
None. Used the CSS-only approach (plan option #4) to avoid modifying 7 TSX files.

## Known Issues
None.
