ul#countdown {
  position: relative;
  top: 50%;
  transform: translateY(-50%);
  margin: 0 auto;
  padding: 0 0 20px 0;
  color: #fff;
  overflow: hidden;
  font-family: 'Arial Narrow', Arial, sans-serif;
  font-weight: bold;
  
  li {
    margin: 0 -3px 0 0;
    padding: 0;
    display: inline-block;
    width: 25%;
    text-align: center;
    
    .label {
      color: #fff;
      text-transform: uppercase;
    }
  }
}

@media (max-width: 405px) {
  ul#countdown {
    width: 80%;

    li {
      font-size: 72px;
      font-size: 8vw;

      .label {
        font-size: 18px;
        font-size: 2.5vw;
      }
    }
  }
}
@media (min-width: 406px) {
  ul#countdown {
    width: 50%;

    li {
      font-size: 72px;
      font-size: 6vw;

      .label {
        font-size: 18px;
        font-size: 1.5vw;
      }
    }
  }
}