Linked image in extra css using theme file

Community Usage questions
3

Hi there,

Just for info for those searching how to implement:
I have it working using this in the theme file

.rstBtn.button-container {
    border-radius: 3px;
    --color-widget: #dfebf5;
    color: #f0e91a;
    background: url(/Images/rest.png) no-repeat;
    background-position: top center;
}

Took me a while to work out that you need to have the images directory in the themes folder
I can't get it to work with a full path to somewhere else on the computer but that would probably be cleaner as I have all my other image files saved with the .json and custom module.