Recucing blank space between letters

Hi,

There is a way for reducing the blank space between letters in a .html file?

Thank you in advance

Lebron

<style type="text/css">

.h4 {
letter-spacing: 0.5em;
word-spacing: 0.5em ;
}

- using css to set the parameters.

</style>


<h4>This is it!</h4>

Frank