Web Development Bootcamp

Mujhe ye bta do koi ki jo background colour hota h ... toh uske liye hum <P style= "background -color : red ;">hello </p> jb use krte h toh isse ish shape me jitni bdi screen hoti h wo colour ho jati h toh mujhe ush hello tk hi background colour rkhna h toh kaise kon sa tag ka use krna hota h??