Update README.md

Author: AlexsandroSA

README.md

@@ -3,8 +3,10 @@
 :running: :hourglass:  List of some challenge challenges of the type one challenge per day
 
 ## Front-End Development
- - [#JavaScript30](https://javascript30.com/)
 
+ - [JavaScript30](https://javascript30.com/)
+ - [100dayscss](https://100dayscss.com/)
+ - [Daily CSS Images](http://dailycssimages.com/)
 
 ## License