Show Icon (Content) on Row Hover Only

Apologies if this question has been covered already–I couldn’t find anything.

In a regular table with four columns, the third column contains an info icon. I’d like to show that particular icon on hover only and hide it otherwise.

How can I achieve that best–perhaps with CSS, applying the same color to it as the background and then highlight it on hover, or is there a better way?

Thanks!