a {
  color: #783cb2;
  text-decoration-color: transparent;
}
.header {
  text-align: center;
  }
.header .logo img {
  max-width: 250px;
  }
.button {
  background: #783cb2;
  color: white;
  border: 2px solid #783cb2;
  border-radius: 100px;
  padding: 7px 16px;
}
.button:hover {
  background: white;
  color: #783cb2;
}