比較下列的差異:first-child 與:first-of-type, :last-child 與:last-of-type, :nth-child, 與:nth-of-type, :nth-last-child 與:nth-last-of-type, :only-child ... ... <看更多>

This is largely a matter of semantics. Generally, you use :first-child/:first-of-type and :last-child/:last-of-type when you're interested ... ... <看更多>

The :last-of-type pseudo-class is a structural pseudo-class. Structural pseudo-classes enable selection based on extra information in the document tree that ... ... <看更多>

From this video you can learn following pseudo classes:- :first-child, :first-of-type, :last-child, :last-of-type ... ... <看更多>