Flex layout

Flex Layout enables complex arrangement of UI elements within a container, enabling responsive design by controlling the alignment, direction and size of items, for example, use it to arrange a items in a row, evenly spaced and centered vertically. Use when the direction needs complex customization that can't be achieved by StackLayout, FlowLayout or SplitLayout. For additional control of the size and position of content, use FlexItem for each content item inside FlexLayout.