#container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    font-family: 'Open Sans', sans-serif;
    background-color: #00B4D8;
  }
  
  #timer-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background-color: white;
    font-size: 100px;
    color: #00B4D8;
  }
  
  #timer {
    transition: background-color 0.5s ease-in-out;
  }
  
  #controls {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
  }
  
  button {
    background-color: #00B4D8;
    color: white;
    font-size: 20px;
    padding: 10px 20px;
    border-radius: 5px;
    margin: 0 10px;
    cursor: pointer;
  }
  
  button:hover {
    background-color: white;
    color: #00B4D8;
  }

  .red {
    background-color: red;
  }