body {
  width: 100%;
  height: 100%;
  position: absolute;
  background: #000000;
  margin: 0;
  padding: 0;
  overscroll-behavior: none;
}
a{
  color:white;
  text-decoration: none;
  text-align: center;
  font-size: 30px;

}

.btn {
  background: #3498db;
  background-image: -webkit-linear-gradient(top, #3498db, #3b2bb8);
  background-image: -moz-linear-gradient(top, #3498db, #3b2bb8);
  background-image: -ms-linear-gradient(top, #3498db, #3b2bb8);
  background-image: -o-linear-gradient(top, #3498db, #3b2bb8);
  background-image: linear-gradient(to bottom, #3498db, #3b2bb8);
  -webkit-border-radius: 28;
  -moz-border-radius: 28;
  border-radius: 28px;
  font-family: Arial;
  color: #ffffff;
  font-size: 17px;
  padding: 10px 20px 10px 20px;
  text-decoration: none;
}

.btn:hover {
  background: #fc3cb9;
  background-image: -webkit-linear-gradient(top, #fc3cb9, #3498db);
  background-image: -moz-linear-gradient(top, #fc3cb9, #3498db);
  background-image: -ms-linear-gradient(top, #fc3cb9, #3498db);
  background-image: -o-linear-gradient(top, #fc3cb9, #3498db);
  background-image: linear-gradient(to bottom, #fc3cb9, #3498db);
  text-decoration: none;
}