Fckeditor default font setting

PHP
1

Hi Everybody,
I am using fckeditor 2.6.6. I have configured default font setting from fck_editorarea.php file like given below:-

body, td
{
font-family: Arial, Verdana, sans-serif;
font-size: 12px;
color:#009;
}

When I saved the text of editor in database, it will store in database like:-

<p>hello me</p>
<p> </p>

So when the text is displayed in a page data taken from database, it will not use the font setting done in editor.
But when some text in formatted in editor by selecting text which to be formatted and saved in database then it will save like:-

<p><span style="font-size: xx-large; "> safs</span></p>

And when it will displayed in a page, it will display as we formatted.
So I would like to know, how can I configure so that I could save default font setting done in editor to the database without formatting in editor.