[solved] Did you remember to set the fifth paragraph's font-size to 22px?

hi I am running in to a problem, I have to set the fifth paragraph. this is my styling : 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; }