Some graphics change. (#10)

* Add Source Code Pro font

* Delete useless hr tags

* Change font

* Change red color (Take from the logo)

* Missing fonts

* Center title

* Resize btn for the new font

* Change text review color

* Update black color

* Finally back to darker black

* Add google material icons

* Add new font

* Finally move to Roboto mono

* Add cool effect on hover

* Unified black on the website

* Lighter shadow

* Clean code

* Go back to old font and get from google font api