You mentioned about the theme so I got an impression that you are creating your custom theme.
If you are not creating a custom theme then that's ok. Simply go to this location and make changes (as per your requirements): Nop.Web/Views/Product/ProductTemplate.Simple.cshtml
What would be the required code? I thought this would be a css issue. Since what I want is, when Short Description field progresses beyond say 22 lines, a scroll box automatically appears.
What would be the required code? I thought this would be a css issue. Since what I want is, when Short Description field progresses beyond say 22 lines, a scroll box automatically appears.
I apologize, I misunderstood your question (I thought you are looking to add a new field in the template).
To add a scrollbar to short description you only need to update CSS (not the view).
Go to your theme's styles.css and look for the class ".short-description" and add
overflow:scroll;
You can do something like this to have more control over the field.