This is a simple application that is made using purely html and css. It will teach you on how to customize the image background by clicking on the blend mode buttons provide like multiply,overlay,screen,butn,color and darken.

Instructions:
1. Download the source code.
2. Extract the compressed folder.
3. Open the index.html in any browser

Note:
This is just a simple program any updates or
constructive criticism will be
accepted

 

Background Image Customization CSS Source Code