Whats wrong with this CSS script?



a:link, a:active, a:visited {
color: #4B83B1;
font-size : 12;
Font-Family: Arial;
text-decoration: none}

a:hover {
color: #EDF3F9;
font-size : 12;
Font-Family: Arial;
text-decoration: none}

BODY {
scrollbar-arrow-color:#000000;
scrollbar-track-color:#FFFFFF;
scrollbar-shadow-color:#000000;
scrollbar-face-color:#FFFFFF;
scrollbar-highlight-color:#000000;
scrollbar-darkshadow-color:#FFFFFF;
scrollbar-3dlight-color:#FFFFFF}


FONT
{
color: #000000;
Font-Family: Arial}