How to add multiple css by c# code.

Question

Hello Sir i am trying to add css like this

"divacccontent.Style.Add("background-color", "#207945");"

 

but i want to add more than one css and i donn't want to repeate it  like 

"divacccontent.Style.Add("background-color", "#207945");"

"divacccontent.Style.Add("display", "block");" 

 

so how can i do.Please help