I want to make the size of the font in the body of my posts and pages bigger. I don't want to change the size of the font in the sidebar or footer however. If there a way to do this? I tried going to Post/Page Styling and entering a new font size in Body Box but it had no effect. I know I can change the size in Body, Text, & Links, but that changes the size of the font in the sidebars and footer too. I just want to change the size of the content. Thank you in advance for any help.

Best Regards,

Adam

P.S. I am using version 3.2 (if that makes a difference). If I upgrade, will any of my changes be lost?

Add a HTML/CSS Inserts -> CSS Inserts

td#middle {
font-size: 1.5em;
}

Or, to limit it to post content:

div.post {
font-size: 1.5em;
}

Theme settings won't be lost, file edits will be lost IF you overwrite the existing theme instead of running the new version side by side with the older one by uploading the new version into its own directory at /wp-content/themes/ i.e. /wp-content/themes/atahualpa333/