Maybe this will help - W3c Validation, or in my case invalidation!
This basically says that it doesn’t exist???
6 [COLOR="Red"]Value Error : font-family Property font-family doesn't exist in CSS level 2.1[/COLOR] but exists in : 'TangerineRegular' 'TangerineRegular'
7 Property src [COLOR="Red"]doesn't exist[/COLOR] : url('../css/fonts/Tangerine_Regular-webfont.eot') url('../css/fonts/Tangerine_Regular-webfont.eot')
12 Property src [COLOR="red"]doesn't exist[/COLOR] : url('../css/fonts/Tangerine_Regular-webfont.eot?#iefix') format('embedded-opentype'),url('../css/fonts/Tangerine_Regular-webfont.woff') format('woff'),url('../css/fonts/Tangerine_Regular-webfont.ttf') format('truetype'),url('../css/fonts/Tangerine_Regular-webfont.svg#TangerineRegular') format('svg') url('../css/fonts/Tangerine_Regular-webfont.eot?#iefix') format('embedded-opentype'),url('../css/fonts/Tangerine_Regular-webfont.woff') format('woff'),url('../css/fonts/Tangerine_Regular-webfont.ttf') format('truetype'),url('../css/fonts/Tangerine_Regular-webfont.svg#TangerineRegular') format('svg')
13 Value Error : font-weight Property font-weight [COLOR="red"]doesn't exist in CSS level 2.1 [/COLOR]but exists in : normal normal
14 Value Error : font-style Property font-style [COLOR="red"]doesn't exist[/COLOR] in CSS level 2.1 but exists in : normal normal
This is index.html
44 #outer Value Error : max-width only 0 can be a length. You must put a unit after your number : 1200 1200
45 #outer Value Error : min-width only 0 can be a length. You must put a unit after your number : 600 600
62 #nav Property word-wrap doesn't exist : break-word break-word
109 #footer Value Error : font-style attempt to find a semi-colon before the property name. add it
This is how I had the css at the time of W3c validation.