Background-image doesn't work

[Diana Alkmaar]

yesterday my site was fine but now suddenly my background image doesn’t work annymore, my css code looks like this:

body{
background-color:red;
background-image: url(…\root\fotos\nevis.JPG);
background-repeat:repeat;
background-attachment:fixed;
background-position:top center;
background-size: cover;

}

can somebody help me with what is wrong pleas?