#root {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.clock {
  font-size: 3rem;
  line-height: 1.1;
  margin: 1rem 0;
  display: flex;
  justify-content: space-between;
}

.clock-label {
  font-size: 1.5rem;
  margin: 1rem 0;
  display: flex;
  justify-content: space-between;
}

.clock span,
.clock-label span {
  width: 6rem;
  display: inline-block;
  text-align: center;
  user-select: none;
}

.clock-container button {
  margin-top: 1rem;
}

.copyright {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  text-align: right;
  font-size: 1rem;
  margin: 0;
}

@media screen and (max-width: 660px) {
  .clock-title {
    font-size: 2.5rem;
  }

  .clock {
    font-size: 1.5rem;
  }

  .clock-label {
    font-size: 1rem;
  }

  .clock span,
  .clock-label span {
    width: 3.5rem;
    margin: 0;
  }

  .copyright {
    font-size: 0.7rem;
    margin: 0;
    bottom: 10px;
    right: 10px;
  }
}