my code isn't working

does anybody know why my code doesn’t work help pleaze here’s what i used :

p:first-child{ font-family:cursive; { p:nth-child(2){ font-family:Tahoma; } p:nth-child(3){ color:#CC0000; } p:nth-child(4){ background-color:#00FF00; } p:nth-child(5){ font-size:22px; }