Zoom Image Gallery
The images have to be positioned somewhat in the middle of the page (in big enough div) so they will be visible when enlarged;
therefore, some contents should be placed at the top, probably text with the description (like I put this text here)
Note: There are no icons (there are just reduced images); therefore, you have to do your calculation for the small images to have equal size

View>Page>Source:
You can change the icons size (width) in:
.gallery > div > img { }

You can change scale and time:
.gallery > div:hover > img { }