body 
{
    font-family:Tahoma;
    font-size:12px;
    direction: rtl;
    text-align: center;
    background-image: url(img/noghte_riz5.jpg);
}
.bg
{
    background-image: url(img/noghte_riz2.jpg);
}
.centr
{
    text-align: center;
}
.btn
{
    font-family:Tahoma;
    font-size:10px;
    color:Orange;
    font-weight:bold;
    background-color:Gray;
}