Submissions from codepen.io

		A Cones Throw Away (codepen.io)
		2 points by memalign 14 days ago \| past
		CSS-Only Mario World (codepen.io)
		1 point by bookofjoe 18 days ago \| past
		Show HN: Interactive sandbox with boxes, conveyor belts and pneumatic tubes (codepen.io)
		2 points by masahito 39 days ago \| past
		Ball Pit (codepen.io)
		178 points by memalign 43 days ago \| past \| 46 comments
		Playable CSS-Only Super Mario Bros Game (codepen.io)
		1 point by bookofjoe 44 days ago \| past
		Playable CSS-Only Super Mario Bros Game (codepen.io)
		1 point by CharlesW 50 days ago \| past \| 1 comment
		Select your fruit (No JavaScript) (codepen.io)
		2 points by ChadNauseam 64 days ago \| past \| 1 comment
		JavaScript Math Bug (codepen.io)
		1 point by lcnmrn 86 days ago \| past
		SVG Path Sliders (codepen.io)
		1 point by tanmaym 3 months ago \| past
		Mario Bros. In CSS (No JavaScript) (codepen.io)
		3 points by qingcharles 3 months ago \| past
		CSS-only Mario World (with keyboard) (codepen.io)
		1 point by l34k 3 months ago \| past
		Show HN: Chordle. Learn to identify pitch by playing Wordle with chords (codepen.io)
		2 points by tehryanx 3 months ago \| past \| 1 comment
		3D in CSS (No JavaScript) (codepen.io)
		7 points by qingcharles 5 months ago \| past \| 1 comment
		ChatGPT Pro Wrote in 5 minutes the Prefix‑Sum CPU Vector Renderer (codepen.io)
		1 point by wiso 6 months ago \| past \| 1 comment
		A visualization of the RGB space covered by named colors (codepen.io)
		298 points by BlankCanvas 6 months ago \| past \| 95 comments
		Clock Made of Clocks (codepen.io)
		6 points by liquid99 7 months ago \| past \| 1 comment
		Hashcolor: Visual SHA-384 Hashes (2019) (codepen.io)
		2 points by maxwell 7 months ago \| past
		Shapes and Shadows – CSS (codepen.io)
		1 point by speckx 8 months ago \| past
		Show HN: Drag to sort card UI (CodePen demo) (codepen.io)
		1 point by turbokit 9 months ago \| past
		Show HN: Flight status UI concept I coded (codepen.io)
		1 point by turbokit 9 months ago \| past \| 1 comment
		Fractal Box Clicker (codepen.io)
		3 points by bookofjoe 9 months ago \| past
		The Backrooms: CSS Edition (codepen.io)
		3 points by qingcharles 10 months ago \| past \| 1 comment
		Pure CSS Moon Phases (codepen.io)
		11 points by ludicrousdispla 10 months ago \| past
		Eclipsed Symmetry (codepen.io)
		1 point by bookofjoe on May 4, 2025 \| past
		A HTML-CSS-JS quine that syntax-highlights itself (codepen.io)
		2 points by finnhvman on April 14, 2025 \| past
		Holographic Masks in CSS (codepen.io)
		3 points by Kerrick on April 12, 2025 \| past \| 1 comment
		Vibe Coding Keyboard (codepen.io)
		4 points by throwaway888abc on April 7, 2025 \| past \| 2 comments
		Gemini 2.5 Pro Virtual Analog Vibe Synth (codepen.io)
		2 points by intellectronica on March 26, 2025 \| past
		Mondrian Toggle (codepen.io)
		1 point by bookofjoe on March 25, 2025 \| past \| 2 comments
		Better slashdot readability with Stylus extension (codepen.io)
		1 point by phun-ky on Feb 13, 2025 \| past \| 1 comment
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