Splitter

Two resizable panes with a separator between them, which the user can drag or move with the keyboard to resize the panes.

See the WAI ARIA guidelines for Window Splitters .

Structure

<Splitter>
	<SplitterPane>...</SplitterPane>
	<SplitterHandle ariaLabel="Resize panes" />
	<SplitterPane>...</SplitterPane>
</Splitter>

Demo