Three overlapping layers in an exact z-order and position
One task across 30 published runs. Inspect the scores and outputs together, with each run's execution method shown.
- Task
- PIXEL-0002
- Domain
- UI components
- Difficulty
- hard
Leading published run: claude-opus-4-8 (low reasoning) at 100.0% composite. Lowest: deepseek-v4-flash at 0.0%. 30 published runs shown on this task.
How this task was evaluated
Results are ordered by this task's published score. API runs use one prompt and one completion; agent runs use a coding harness with tools and iteration. Inspect the execution method when comparing results.
Objective scores use the benchmark's execution checks. Judge scores use a vision panel's fixed rubric; the published score leaves out a model's own family. Missing values are labelled rather than treated as zero.
Read the brief
Build a single self-contained HTML file (`index.html`) that renders three overlapping square layers in a fixed stacking order, with no build step and no network calls (inline all CSS, no external fonts or scripts). The grader measures the rendered geometry and computed z-index, so the stacking order and offsets must be exact. Container: - A `<section id="stage">` that is `position: relative`, 400px wide, 300px tall. Three layers inside it, each `position: absolute`, 160px wide, 160px tall, border-radius 12px. IDs are required so each layer can be measured: - `id="base"` at left 0px, top 0px, z-index 1, background #1e293b - `id="mid"` at left 60px, top 60px, z-index 5, background #6d28d9 - `id="front"` at left 120px, top 120px, z-index 9, background #f59e0b The numeric z-index values and the px offsets are the contract. Do not eyeball them.
