Selecionando o último filho CSS
p:last-child {
font-size: 0.75em;
}
Southern White Crowned Shrike
p:last-child {
font-size: 0.75em;
}/*This will only work if the last child of someEID has
the class .myclassName
if the last child does not have class name us js*/
#someEID .myClassName:last-child {
background: blue;
}