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-> ACE FRONTEND - https://www.acefrontend.com
-> CSS BATTLE - https://cssbattle.dev
-> CODE PEN - https://codepen.io/challenges
-> CODE PIP https://codepip.com
-> CODIER - https://codier.io
-> CSS TRICKS - https://css-tricks.com/front-end-challenges
-> CSS SPEEDRUN - https://css-speedrun.netlify.app
-> CSSGRIDGARDEN - http://cssgridgarden.com
-> CSSHELL https://csshell.dev
-> DRIBBBLE - https://dribbble.com
-> DAILY UI - https://www.dailyui.co
-> DEV CHALLENGES - https://devchallenges.io
-> DESAFIO 333 - https://github.com/codigofalado/desafio333
-> ENJOYCSS - https://enjoycss.com
-> FLEXBOX DEFENSE - http://www.flexboxdefense.com
-> FLEXBOX ZOMBIES - https://mastery.games
-> FRONTEND MENTOR - https://www.frontendmentor.io
-> FRONTEND LOOPS - https://frontloops.io
-> FRONTEND CHALLENGES - https://github.com/felipefialho/frontend-challenges
-> FLEXBOX FROGGY http://flexboxfroggy.com
-> FLUKEOUT - https://flukeout.github.io
-> JAVASCRIPT 30 - https://javascript30.com
-> LAB REAAL - https://lab.reaal.me
-> LESSTESTER - https://www.sassmeister.com
-> UX TOOLS https://uxtools.co/challenges
-> PICCALIL - https://piccalil.li
-> SILENT TEACHER - http://silentteacher.toxicode.fr
-> W3SCHOOLS https://www.w3schools.com/css/exercise.asp
-> 100 DAYS CSS - https://100dayscss.com
-> 30 SECONDS OF CODE - https://www.30secondsofcode.org
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