Object pages in multi application user interface

A system for presenting a common user interface (UI) of multiple applications on diverse client computing devices as a web page that includes a set of UI elements leading to the multiple applications, the diverse client computing devices having display screens of diverse sizes, the system comprising:

• one or more backend servers hosting a UI infrastructure including the common UI and one or more object page floorplans of respective UI object pages representing the multiple applications and representing application information and data on the diverse client computing devices;
• and
• one or more design tools to process the object page floorplans to display, create, or edit the UI object pages representing the multiple applications and representing application information and data on the client computing device, wherein the one or more design tools allow the user to create a customized UI environment tailored to user preference, wherein the customized UI environment comprises a plurality of content containers with a customized appearance and presentation, wherein the content containers are adjustable to fit within different display screens of the client computing devices, and wherein the content containers can display content from a plurality of different applications, and
• wherein the object page floorplans include a first object page layout including a title bar, a header, an expanded default state, a navigation control, a content area, and a footer toolbar containing actions that are performed upon a corresponding first UI object page, wherein the header includes controls for tailoring the customized UI environment, wherein the content area includes content blocks that have a flexible width and are self-adjusting to avoid truncation of content, and wherein spacing between content blocks is constant and non-zero.