how to call images in css file?

[whitebeard-85]

The css file I have is written as follows.

div::-webkit-scrollbar-button:horizontal:start:decrement {
opacity:0.5;
background-image: url(../nep_image/nac_sb_left.png);
background-repeat: no-repeat;
background-position: 4px 2px, 0 0;
}

When loading an epub file in epub.js, the image with a relative path in the CSS above cannot be loaded.
What should I do?

[johnfactotum]

This is probably the same as #1322.