understanding [class*="content"]:before

[Manoj]

In wordpress TwentyThirteen theme i found this styling

It is used to clear the float
but i don’t understand this type of styling does any one know how it works.

what’s that [ ] signifies plz expalin the syntax

[Tom Houy]

You can use the :before and :after selectors to append additional content to your existing content via CSS.

Something such as:

p:before
{
content:”» “;
}

Would append a “» ” before every paragraph. You could also use it to add things such as icons before or after some content, for example.

[Author]

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