The appearance of category title links is controlled through CSS defined within a theme. You can edit your theme's CSS to manipulate the design of links in your forum that point to a category.

Please follow the directions mentioned below to specifically change the size or style of the links in your forum that point to a category. All other links would remain the same.

1. Log in to your Website Toolbox account.
2. Click the Integrate link.
3. Click the Custom Code link.
4. Insert the following code into the Forum Head Tag HTML Code textbox:

   To make the links normal instead of bold:

   <style>
   .forum-title {
         font-weight: normal;
   } 
   </style>
   

   To increase the font size:

   <style>
   .forum-title {
         font-size: 20px;
   }
   </style>
   

   (Note: You can specify any font size based on your specific needs.)
   
5. Save the changes.

CSS is used to control the style and layout of web pages on the Internet. To learn more about CSS, try the W3Schools CSS Tutorial.