# Missing H1 heading — dev spec
Site: yahoo.com · Priority 6 · High · Effort: Low (0.5-2 days)

## Problem
The homepage lacks an H1 heading, which is a missed opportunity for SEO and user orientation, as the page's main purpose is not clearly communicated.

## Evidence (from the live site)
> The homepage has 0 H1 tags; the H2s include 'Trending', 'Explore More', 'For You', etc., but no H1 exists.
> No H1 heading on the page.

## Current state
h1: None; cta: Sign in, See more stories, See forecast; notes: No H1 heading on the page.

## Required change
h1: Yahoo | News, Email and Search; cta: Unchanged; notes: Add an H1 that describes the site's value proposition to improve SEO and user clarity.

## Acceptance criteria
- GIVEN a first-time visitor on the affected page
- WHEN the change is live
- THEN Add an H1 that describes the site's value proposition to improve SEO and user clarity.
- AND no layout regression at 375px / 768px / 1280px
- AND the changed control is keyboard-reachable with an accessible name

## Tracking
- Fire `cro_missing_h1_heading` on interaction with the changed element
- Verify the event fires in BOTH variants before opening traffic

## Test plan
- Two-proportion z-test, 95% significance, 80% power
- 315,206 visitors per variant to detect a 5.0% relative lift
- Run at least one full business cycle; duration depends on traffic

## Rollback
Feature-flag the change; revert if the primary metric drops for 3 consecutive days.