I have added one more choice to the way you can display thumbnails.
You can Use the default ( Show Caption ) method which shows a static caption beneath the thumbnail or you can go with the ( Hover for Caption ) which shows the caption when you hover over the thumbnail.
The above choices are available from the "Settings" menu at the top of the page. Currently, selected choices from the menu will be highlighted in red.
You can see in the attached images the difference.
Hover for Caption