#er{
    height: 100%;
    width: 100%;
    margin: 10% auto;
    font-size: 170px;
    direction: ltr;
    font-family: iy;
	text-align: center;
}
.er1{
    height: 100%;
    width: 100%;
    margin: 10% auto;
    font-size: 40px;
    direction: rtl;
    text-align: center;
    font-family: is;
}