How to Force HTML/CSS Background image for Printing code example
Example: css print has background graphics
/*
This forces browsers to use background colors when user prints a web page.
Even if they have Print Options Background Graphics turned off.
Default value Economy
Browser Support See
https://developer.mozilla.org/en-US/docs/Web/CSS/color-adjust
*/
color-adjust: exact;
-webkit-print-color-adjust: exact;