Nbsp (non breaking space)
A nonbreaking space is a white space character that HTML will not collapse. Nonbreaking spaces are used to hold open table cells and add spacing between words.
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Nesting
Embedding one object in another object of the same type. For example, many word processing applications allow you to embed (nest) one document into another.
New Visitor
A new visitor is someone that has never entered in a web page or web portal before. It is important to offer a good impression to new visitors so that they come back and they can become frequent visitors.
Normal flow
Normal flow is the way that elements are displayed in a web page in mostcircumstances. All elements in HTML are inside boxes which are either inline boxes or block boxes.