Bootstrap is build on jquery. You can get a log of good info here. http://api.jquery.com/ Look at the menu on the left side and you will find a "Selectors" section.

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>>FWIW,
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form *[name="customer_id"]
>> form<space> means an element within <form> ... </form>
>>* means any element of any tag
>>[name="customer_id"] means an element that has the attribute 'name' with the value "customer_id"
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>>an easy way to learn is by opening a given site and examine elements with firebug.
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>Thank you for the explanation. I will try to find a site where this type of declaration is used and examine it.
>I still, however, don't understand how the above code/example will save me from having each application field styled in a CSS file. For example, say I want the field "customer_id" always (on all application pages) to be of 200px width. So thought I would set this width for the class "customer_id" in the CSS file. Since CSS file will be used in all pages, the set width will be applied to any Input that has class "customer_id".
>What I don't understand is how the example above will eliminate the need for this class in CSS file.