How do I Change the Font Size of a Price Table in Wordpress?

In any modern web browser you should be able to right click the page and choose "Inspect Element" from the dialog menu.  This will then allow you to isolate the specific elements on the page and see the CSS that styles that element.

When I do this with Firefox, it tells me that this element is your target:

p.p-price {
    background: none repeat scroll 0 0 #FFFFFF;
   /* color: #FFC000;*/
    font-family: "Open_Sans_B";
    font-size: 42px;
    margin: 0;
    padding: 30px;
    text-transform: uppercase;
}

in the price-table.css file

Setting the font-size to about 24px keeps everything on one line.  You can make that bigger if you want reduce the padding a bit.

There's no price-table.css file for my theme. Is there another CSS file that will have all the price tables? I know there's a shortcodes plugin I had to install to get the price tables to display. Could it be in the plugin?

It may have come from a plugin or it may be buried in the file structure of the theme.  Appearance | Editor does not always display all files.

So what do I do to find it buried in the file structure or plugin? Sorry new to this.

Thanks that worked.