validate css file

Dear W3Schools: i´m having a problem with a css file. The style works perfectly on IE, but fails when running on FF or Chrome. The main problem is in the "table desing" style, the rest of the document was solved.


Could you please check the "table design" fragment?


/*******************************************************************************
  TABLE DESIGN
*******************************************************************************/
..rounded-corner {
margin : 0;
width : 625px;
text-align : left;
border-collapse : collapse;
}
..rounded-corner thead th.rounded-company {
width : 26px;
background : #60c8f2 url('../images/left.jpg') no-repeat left top;
}
..rounded-corner thead th.rounded-q4 {
background : #60c8f2 url('../images/right.jpg') no-repeat right top;
}
..rounded-corner th {
padding : 8px;
font-weight : normal;
font-size : 13px;
color : #039;
background : #60c8f2;
}
..rounded-corner td {
padding : 8px;
background : #ecf8fd;
border-top : 1px solid #fff;
color : #669;
}
..rounded-corner tfoot td.rounded-foot-left {
background : #ecf8fd url('../images/botleft.jpg') no-repeat left bottom;
}
..rounded-corner tfoot td.rounded-foot-right {
background : #ecf8fd url('../images/botright.jpg') no-repeat right bottom;
}
..rounded-corner tbody tr:hover td {
background : #d2e7f0;
}?



Thank you!!!!


Martín Tchobanian