036 CSS Jellyfish Tank

1 test · 1 finished runs (0 agent, 1 raw one-shot) · 1 live demo

The prompt

CSS Jellyfish Tank: An aquarium scene drawn with pure CSS: three translucent jellyfish with pulsing bells and waving tentacles float upward at different speeds, bubbles rise, and light rays shimmer down. The page uses only HTML and CSS animation; no JavaScript at all. Build it as ONE self-contained HTML file: inline CSS and JavaScript only, no libraries or frameworks, and no external requests of any kind (no CDNs, web fonts, images or audio files); anything visual or audible is made in code (HTML/CSS, SVG, Canvas, WebGL or WebAudio). It must work when opened directly from disk, fit the browser window responsively, and run without console errors. Output ONLY the complete HTML file, starting with <!DOCTYPE html> and ending with </html>, with no explanation or markdown fences.