The missing stack from the Stacks plugin! UsefulStack is a simple (and free) box-container stack, with emphaisis on building more flexible webpages and handling a selection of other utilitarian tasks. A core function of UsefulStack is to replace padding and margins (specified in pixels) with proportionate units of measurement (like percent) instead. This results in stronger and more fluid page layouts; with the ability to resize elegantly in all mainstream web browsers. UsefulStack can perform several other clever tricks. This little stack could prove to be one of the most useful stack elements you ever install.