first child css

:first-child {
	//styles here
}

:nth-child(1) { //the benefit of this is you can do it for 2nd, 3rd etc...
	//styles here 
}

p:first-child {
  font-size: 1.5em;
}

  
    p:first-child
 { 

   background-color: yellow;

 }
  
 

/*CSS First - forth child*/
:first-child {}

:nth-child(2){}
:nth-child(3){}
:nth-child(4){}

:first-child {
  css declarations;
}