body {
  background-color: azure;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

h1 {
  color: azure;
}

.stop-watch {
  display: flex;
  flex-direction: column;
  max-height: 100vh;
  margin-block: 8.7rem;
}

.timer {
  border: 1px solid gray;
  padding: 3rem;
  margin: auto;
  color: white;
  background-color: black;
  border-radius: 1.5rem;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.322);
  font-size: 3rem;
}

.buttons {
  display: flex;
  gap: 2rem;
  margin: auto;
  margin-top: 1rem;
}

button {
  border: none;
  background-color: red;
  color: azure;
  padding: 1.3rem;
  border-radius: 1rem;
  font-size: 1.2rem;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.322);
  cursor: pointer;
}

@media screen and (max-width: 495px) {
  .timer {
    font-size: 2rem;
    padding: 2.5rem;
  }

  .buttons {
    gap: 1rem;
  }

  button {
    font-size: 1rem;
    padding: 1rem;
  }
}