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<h2 id="external-links">External links</h2> <ul><li><a href="https://codepen.io/">Official website</a> </li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"That Tech Show Podcast - EPISODE 33 - CODEPEN, CSS TRICKS AND OTHER NERDERY WITH CHRIS COYIER". 2021-09-28. <a href="https://thattech.show/episodes/33-codepen-css-tricks-and-other-nerdery-with-chris-coyier" target="_blank">https://thattech.show/episodes/33-codepen-css-tricks-and-other-nerdery-with-chris-coyier</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>CodePen "About page", Codepen.io, 17 March 2016. <a href="https://web.archive.org/web/20120325042104/http://codepen.io/about" target="_blank">https://web.archive.org/web/20120325042104/http://codepen.io/about</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Silva, Patrícia (10 July 2020). "What is CodePen, and how to use it?". imaginarycloud.com. Archived from the original on 2020-08-12. Retrieved 5 January 2022. <a href="https://www.imaginarycloud.com/blog/how-to-use-codepen-to-speed-up-your-front-end-development/" target="_blank">https://www.imaginarycloud.com/blog/how-to-use-codepen-to-speed-up-your-front-end-development/</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Kelly Kearsley (14 September 2015). "#50startups Update: How CodePen Raised $1 Million (in Five Minutes)". Startupbend. Archived from the original on 11 July 2018. Retrieved 17 March 2017. <a href="https://web.archive.org/web/20180711095011/https://startupbend.com/articles/50startups-update-how-codepen-raised-1-million-in-five-minutes/" target="_blank">https://web.archive.org/web/20180711095011/https://startupbend.com/articles/50startups-update-how-codepen-raised-1-million-in-five-minutes/</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>"codepen.io Traffic Statistics". SimilarWeb. Retrieved 2019-11-16. <a href="https://www.similarweb.com/website/codepen.io#overview" target="_blank">https://www.similarweb.com/website/codepen.io#overview</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> </ol>