Change font size in Index.php?

If I want to change the font size (and font color) of
'Congratulations! You have successfully installed your Zen Cart™ E-Commerce Solution.'

would i do that on this line, in Index.php?

"define('HEADING_TITLE', 'Congratulations! You have successfully installed your Zen Cart™ E-Commerce Solution.'); "

If not, where, how? Thanks.

This is an h1 heading, so you could either adjust the h1 styling in your stylesheet, which would affect all h1 headings, or create a style specifically for #indexDefaultHeading.

Thank you for your reply.

I'd like to do that.

Where is "#indexDefaultHeading"?

Also, could you please give me an idea of how to "create a style specifically for #indexDefaultHeading" ?

Thanks.

You would simply add the following to your stylesheet (suitably edited to match your context)> #indexDefaultHeading {

color: red;
font-size: 150%;

}

thanks alot