header {
  margin: 0.2vh;
  padding: 0.2vh;
  height: 10vh;
  border: 1px solid yellow;
  color: yellow;
  background-color: maroon;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.title {
  padding: 0.1vh;
  flex: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4vh;
  font-weight: bold;
}
.subtitle {
  padding: 0.1vh;
  flex: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2vh;
}