css - Web Font Not Working Windows -

i have font in of formats known man, , reason not load on windows browser. here code:

    @font-face {   font-family: 'avenirnext-regular';   src: url('/avenir/avenirnext-regular/avenirnext-regular.eot');   src: url('/avenir/avenirnext-regular/avenirnext-regular.woff2') format('woff2'),        url('/avenir/avenirnext-regular/avenirnext-regular.woff') format('woff'),        url('/avenir/avenirnext-regular/avenirnext-regular.ttf') format('truetype'),        url('/avenir/avenirnext-regular/avenirnext-regular.svg#avenirnext-regular') format('svg'),        url('/avenir/avenirnext-regular/avenirnext-regular.eot?#iefix') format('embedded-opentype');   font-weight: normal;   font-style: normal; } 

it's small cannot figure out is.

in cases, urls shouldn't start /, operating system understand them absolute paths. avenir folder in root of site?