body {
  text-align: center;
  background: #000;
  color: white;
  padding:10% 2%;
  font-family: "Vazirmatn", Tahoma, Arial, sans-serif;
  line-height: 1.7;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Sahel", Tahoma, Arial, sans-serif;
  font-weight: 800;
}
h1 {
  text-shadow: 0 0 30px #000, 0 0 5px #00f, 0 0 60px #00f;
}
h2 { font-size: 95%;}
p {
  font-size: 88%;
  color: #39b764;
}
.btn {
  box-shadow: 1px 1px #444;    
}