O co chodzi validatorowi CSS ?, Nie ma błędów, ale sa ostrzezenia Opcje

[free]

Nie ma błędów w moim CSS, ale sa ostrzezenia, z którymi nie mogę sobie poradzic.

[HTML] pobierz, plaintext 
.container {
width : 990px;
margin : 0;
padding : 0;
background-color : #e4e4e4;
background : url('images/lewa.gif') repeat-y;
border-left :0 dotted silver;
border-top :0;
border-right :0 dotted black;
border-bottom :0;
}
.srodek {
float : left;
border-left :1px dotted silver;
border-top :0;
border-right :1px dotted silver;
border-bottom :0;
background-color : #eff4fa;
width: 684px;
}
 
H1 { background-color : transparent; FONT-SIZE: 10px; COLOR: black; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; padding-left: 5px; padding-right: 5px }
H2 { background-color : transparent; FONT-SIZE: 10px; COLOR: green; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; padding-left: 5px; padding-right: 5px }
p, td { background-color : transparent; FONT-SIZE: 10px; COLOR: black; line-height:1.5; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; text-align: justify }
[HTML] pobierz, plaintext 

Wyswietla mi :
You have no color with your background-color : .container
You have no color with your background-color : .srodek
You have no background-color with your color : H1
You have no background-color with your color : H2
You have no background-color with your color : td
You have no background-color with your color : td

ALE MAM ZDFINIOWANE KOLORY TŁA. Co musze zmienić, by css był bezbłędny ?