Adjacent Sibling pseudo-class support if RED.
Child pseudo-class support if GREEN.
Attribute pseudo-classes supported if image 1 border is green, image 2 border is red and image 3 border is dark blue.
:focus pseudo-element support if field border is red when clicked.
The first-letter pseudo element supported if first letter is large.
The :first-line pseudo element supported if text is blue capital letters.
This browser does not support the :first and :after pseudo elements.