what is the meaning of pseudo

Answer 1

A pseudo-class is used to define a special state of an element.

For example, it can be used to:

Style an element when a user mouses over it
Style visited and unvisited links differently
Style an element when it gets focus.

The syntax of pseudo-classes:

selector:pseudo-class {
property:value;
}
example:
a:hover {
color:red
}
in the example above the link will change its color to red when a mouse over it.

Answer 2

thnx