Merge pull request #112 from Lorenagubaira/css-exercise

the footnotes were added

Author: tommygonzaleza

README.es.md

@@ -93,3 +93,6 @@ Gracias a estas personas maravillosas ([emoji key](https://github.com/kentcdodds
 3. [Daniel Machota (@d4rkm0nst3r)](https://github.com/d4rkm0nst3r), contribución: (build-tutorial) ✅, Traducción 🌍
 
 Este proyecto sigue la especificación [all-contributors](https://github.com/kentcdodds/all-contributors). ¡Todas las contribuciones son bienvenidas!
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+Este y otros ejercicios son usados para [aprender a programar](https://4geeksacademy.com/es/aprender-a-programar/aprender-a-programar-desde-cero) por parte de los alumnos de 4Geeks Academy [Coding Bootcamp](https://4geeksacademy.com/us/coding-bootcamp) realizado por [Alejandro Sánchez](https://twitter.com/alesanchezr) y muchos otros contribuyentes. Conoce más sobre nuestros [Curso de Programación](https://4geeksacademy.com/es/curso-de-programacion-desde-cero?lang=es) para convertirte en [Full Stack Developer](https://4geeksacademy.com/es/coding-bootcamps/desarrollador-full-stack/?lang=es), o nuestro [Data Science Bootcamp](https://4geeksacademy.com/es/coding-bootcamps/curso-datascience-machine-learning).
+

README.md

@@ -95,3 +95,5 @@ Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds
 3. [Daniel Machota (@d4rkm0nst3r)](https://github.com/d4rkm0nst3r), contribution: (build-tutorial) ✅, Translation 🌍
 
 This project follows the [all-contributors](https://github.com/kentcdodds/all-contributors) specification. Contributions of any kind are welcome!
+
+This and many other exercises are built by students as part of the 4Geeks Academy [Coding Bootcamp](https://4geeksacademy.com/us/coding-bootcamp) by [Alejandro Sánchez](https://twitter.com/alesanchezr) and many other contributors. Find out more about our [Full Stack Developer Course](https://4geeksacademy.com/us/coding-bootcamps/part-time-full-stack-developer), and  [Data Science Bootcamp](https://4geeksacademy.com/us/coding-bootcamps/datascience-machine-learning).