body {
  font-family: Arial, sans-serif;
  text-align: center;
  background-color: #f0f0f0;
  padding: 30px;
}

.container {
  width: 70%;
  margin: 0 auto;
}

#text {
  font-size: 24px;
}

#text span {
  color: #333;
}

#text span.active {
  color: #f00;
}