.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4rem;
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #210697;
  color: white;
}

.btn {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  border: none;
  background-color: transparent;
  height: 1.5rem;
  width: 1.5rem;
  cursor: pointer;
}

.btn div {
  width: 1.5rem;
  height: 2px;
  border-radius: 2px;
  background-color: white;
}