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freeCodeCamp/curriculum/challenges/english/01-responsive-web-design/css-variables-skyline/part-001.md

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id title challengeType dashedName
5d822fd413a79914d39e98c9 Part 1 0 part-1

--description--

Welcome to the CSS Variables skyline project! Start by adding the !DOCTYPE html declaration at the top of the document so the browser knows what type of document it's reading.

--hints--

test-text

assert(code.match(/<!DOCTYPE\s+html\s*>/gi));

--seed--

--seed-contents--

--solutions--

<!DOCTYPE html>