body
{
    text-align: center;
    margin: 0px 0px 0px 0px;
    padding: 0px 0px 0px 0px;
    background-color: Yellow;
}

div
{
    background-color: Black;
}

.maina
{
    text-align: center;
    width: 900px;
    background-color: Black;
}