body {
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 60px;
}

h1 {
  margin-bottom: 16px;
}

.input-group {
  margin-bottom: 16px;
}

.input-group label {
  display: block;
  margin-bottom: 4px;
  font-weight: bold;
}

.input-group input {
  padding: 8px;
  font-size: 16px;
  width: 100px;
  text-align: right;
}

#phase-label {
  font-size: 20px;
  margin-top: 20px;
  font-weight: bold;
  color: #333;
}

#timer-display {
  font-size: 48px;
  margin: 24px 0;
  font-weight: bold;
}

.button-group {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.button-group button {
  padding: 8px 20px;
  font-size: 16px;
  cursor: pointer;
}