.mainLogo { 
    width:384px;
    height:347px;
    background-image: url(images/dumedu.png);
}

.topLogo {
    background-image: url(images/dumedu.png); 
    background-position: left top;
    background-repeat: no-repeat;
    position: relative;
    top: -5px;
    height: 45px;
}