* {
  position: relative;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.centered {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.message {
  display: inline-block;
  line-height: 1.2;
  transition: line-height .2s, width .2s;
  overflow: hidden;
}

.message,
.hidden {
  font-family: 'Roboto', sans-serif;
  font-size: 18px; 
}

.hidden {
  color: #f8f9fa;
}