How can I change the grey back ground colour of jumbotron through css ?

Question

html,css

Answer 1

Look it's Please ↓↓↓ :)
https://stackoverflow.com/questions/22904102/how-to-change-the-background-color-of-jumbrotron

Answer 2

accept my challenge if you want to learn c++

Answer 3

you don't want to learn