.background-paper {
  background-image: url("../images/fon.png");
  background-color: black;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.start-button {
  background: transparent;
  color: white;
  transition: .5s;
}

.start-button:hover {
  background: rgb(255, 255, 255, .6);
  color: black;

}