css: it shows in a unique way the mosaics of links promoted in ZOOM 100% in IE

Tile 1 Tile 2 Tile 3 Tile 4
Tile 5 Tile 6 Tile 7 Tile 8
Tile 9

In 100% Zoom or (a% of Zoom and open with Internet Explorer) I want it to remain
4 tiles through.
And, I do NOT want to see half of a mosaic disappear after 150%.

The Tiles will be essentially the ONLY webpart shown on the site page.

4 Tiles in all is very important O 5 Tiles in other pages of the site. I get a lot out of this application. Can I just format the inheritance or 800px in the script, I do not know how to combine both?