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When I think of what to propose in a paper I evaluate the usefulness of course first argument. For this reason, until now I had rejected the choice between the eligible candidates' utility Position jQuery Ui. I was wrong, and quite a lot. Listed as "underdog" was a hasty decision, however, to which I can fix it.
Ui Position is a package of low Lovel utilities Ui recently added to that basically allows you to easily manage the position of the elements of a web page.
Semplifichiamolo in this way (purists will forgive me): Ui Position allows you to easily tell the browser "Positioning div at the bottom right corner X of Y p".
The client programmers have always been able to implement this logic, but makes Ui Position enormously easier to explain.
Maybe it's a bit extreme but why not use it as an application to create the entire structure of a site?
Think of a simple static site initially, not to fly too high.
The classic site that you promised your friend.
A basic structure with a header, menu, content and footer.
Now faced with this scenario, I usually raise the following considerations:
That's where we will bring our work:

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