You may need to position the image within the CSS code itself. Using text-align: center usually won't work for images.
Dimitri
2:14 pm on Jun 27, 2018 (gmt 0)
I am not sure to understand exactly what you want to do, but you can also look at the CSS property "background-image" [w3schools.com...] , this allows you to show one or more image, control their position, if you want them to repeat or not, you can even include gradients.