Help with CSS for Background image Please :))

Please can somebody tell me if this is the correct CSS to have a background image instead of BG colour
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/* Current css used for background colour in child theme style.css */
}
.itemdata.featured .thumbnail {
color: #468847;
background: none repeat scroll 0% 0% #FFF !important;
border-color: #D2DDC9;
}
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Is this the correct css if I want to have a Background image instead of colour background for the featured member in the Dating theme?
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/* New css for background image instead of BG colour css */
}
.itemdata.featured .thumbnail {
color: #468847;
background-image: url(“https://www.dirtyoldmen.se/wpcontent/uploads/2015/06/backroundimage.jpg”); !important;
border-color: #D2DDC9;
}
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Please can somebody correct me if I’m wrong?
I want to put the css in my child theme style sheet and NOT in Design Meta