validering af css

Hej eksperter,

jeg har fået mit css valideret, jeg mangler en der kan hjælpe mig med at gennemskue de fejl der er idet jeg skal have sitet vist korrekt både i IE og Firefox.

Er der en der vil hjælpe mig med at rette CSS og evt. også HTML delen.

Siden kan også findes på www.klartilsyn.com/netau/

på forhånd tak

Her kommer resultatet valideringen:

Line: 3
Parse error - Unrecognized : <style type="text/css"> html,body{height:100%;margin:0px;border:0px;padding:0px;font-family:verdana,arial,sans-serif;font-size:small;background:url(images/wallpaper.jpg);}

Line: 82 Context : .my_table
Invalid number : font-size only 0 can be a length. You must put an unit after your number : 12

Warnings
URI : http://www.klartilsyn.com/netau/style.css
Line : 32 font-family: You are encouraged to offer a generic family as a last alternative
Line : 43 font-family: You are encouraged to offer a generic family as a last alternative
Line : 56 font-family: You are encouraged to offer a generic family as a last alternative
Line : 71 font-family: You are encouraged to offer a generic family as a last alternative
Line : 83 font-family: You are encouraged to offer a generic family as a last alternative
Valid CSS information
#site {
width : 780px;
margin : 0 auto;
}
#banner {
height : 78px;
background : white;
border : 1px solid black;
}
#commit {
height : 20px;
text-align : center;
background : black;
color : white;
font-size : x-small;
margin : 5px 0;
padding-top : 4px;
}
#commit_down {
border : 1px solid black;
height : 20px;
text-align : center;
background : black;
color : white;
font-size : x-small;
margin : 8px 0;
padding-top : 4px;
}
#menu {
height : 15px;
padding : 5px;
color : white;
margin : 5px 0;
border : 1px solid black;
background : #bbb;
}
#menu span {
background : #903;
border : 1px solid black;
}
#main {
border : 1px solid black;
background : white;
padding : 8px;
height : 648px;
font-size : 12px;
}
#nyheder {
border : 1px none inherit;
background : red;
height : 100px;
font-size : 26px;
float : left;
}
#leftcol {
border : 1px solid black;
float : left;
width : 14%;
}
#rightcol {
border : 1px solid black;
float : right;
}
#nyhedsbrev {
border : 1px solid black;
font-family : verdana;
font-size : 12px;
position : absolute;
left : 240px;
top : 350px;
height : 150px;
background : #bbb;
width : 16%;
}
#nyheder {
font-family : verdana;
font-size : 12px;
position : absolute;
left : 240px;
top : 612px;
height : 168px;
background : #bbb;
width : 16%;
border : 1px solid black;
}
#adresser {
font-family : verdana;
font-size : 12px;
position : absolute;
right : 241px;
top : 300px;
height : 168px;
background : #bbb;
width : 140px;
border : 1px solid black;
}
#breadcrumb {
font-family : verdana;
font-size : 10px;
position : absolute;
right : 750px;
top : 120px;
height : 12px;
width : 140px;
}
.my_table {
font-family : verdana;
color : white;
}