Calculadora Simple con HTML, CSS y Javascirpt
Thanks to @abarna-codespot. I learn a lot watching her video.
Code https://github.com/abarna-codespot/A-simple-Calculator https://www.youtube.com/watch?v=CI2GwL--ll8&t=739s
Operator Colors https://digitalsynopsis.com/design/color-schemes-palettes-combinations/ Ember Palette