Jdeveloper and ADF 12.2.1 comes with many new features ( see these posts-
New look of dvt:funnelChart for Data Visualization in Jdeveloper 12.2.1.0
New look of dvt:pieChart as donut chart for Data Visualization in Jdeveloper 12.2.1.0 )
and supports responsive UI design.
Masonry Layout and MatchMediaBehaivor tag is introduced to support responsive UI design
af:matchMediaBehavior allows developer to control properties of components according to screen size. It uses CSS media queries to detect screen size and changes value of specified property of component