main {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.btn {
  width: 8rem;
  height: 3rem;
  background-color: transparent;
  border: 1px solid black;
  border-radius: 10px;
  cursor: pointer;
}
.btn:hover {
  background-color: #4e4e4e;
  color: white;
  border: 0;
}
.btn:active {
  border: 3px solid grey;
}