body{
    background: color #333;;
    font-size: 18px;
    font-family:B Nazanin,B Mitra,Arial, Helvetica, sans-serif;
    direction: rtl;
}
#container{
    width: 80%;
    background-color: rgb(105, 173, 175);
    overflow: hidden;
    margin: 20px auto;
    padding: 25px;
}
header{
    text-align: center;
    border-bottom: 5px dashed #333;
}
header h1{
    margin: 0px;
    padding: 0px;
}
header p{
    font-variant: small-caps;
}
section{
    min-height: 400px;
}
footer{
    text-align: center;
}
input[type = submit]{
    background-color: #333;
    color: #fff;
    padding: 15px 25px;
    border: none;
}
#result{
    background-color: #333;
    color: #fff;
}
#result h3{
    padding: 10px;
    margin: 10px 0px;
}
#result span{
    color: cadetblue;
    font-weight: bold;
}