style.css

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

:root {
  font-size: 62.5%;
}

body {
  background: #FFFFFF;
  width: 100%;
  height: 100%;
  }

.page {
  display: grid;
}

main {
  width: 82.1rem;
  margin: 14rem auto 6rem;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: topDown 1s;
}

.display{
  display: flex;
  flex-direction: column;
  gap: 1.7rem;
}

.controls {
  display: flex;
  justify-content: space-between;
}

.controls svg {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
}

.hide {
  display: none;
}

.timer {
  display: flex;
  font-family: 'Roboto', sans-serif;
  font-weight: 500;
  font-size: 12.6rem;
  line-height: 14.8rem;
  color: #323238;
}

.setup {
  display: grid;
  grid-template-areas: "A B"
  "C D";
  gap: 3.2rem;
}

.setup div:nth-child(1) {
  grid-area: A;
}

.setup div:nth-child(2) {
  grid-area: B;
}

.setup div:nth-child(3) {
  grid-area: C;
}

.setup div:nth-child(4) {
  grid-area: D;
}

button {
  border: none;
  cursor: pointer;
  box-sizing: border-box;
  transition: transform 200ms;
}

.setup button:hover,
footer button:hover {
  transform: scale(1.1);
}

.controls button {
  background: #FFFFFF;
  width: 4.8rem;
  height: 4.8rem;
}

.controls button svg:hover path {
  fill: #02799D;
}

.controls .btnClicked {
  background: #02799D;
  border-radius: 100%;
  border: 3px solid #02799D;
}

.controls .btnClicked svg path {
  fill: #FFFFFF;
}

.controls .btnClicked svg:hover path {
  fill: #FFFFFF;
}

.setup button {
  margin: 0;
  padding: 0;
  width: 13.8rem;
  height: 15.2rem;
  background: #E1E1E6;
  border-radius: 2.4rem;
  box-sizing: border-box;
}

.setup button svg {
  box-sizing: border-box;
  padding: 4.8rem 4.7rem;
  width: 100%;
  height: 100%;
}

.setup button:hover svg path{
  fill: #02799D;
}

.setup .btnClicked {
  background: #02799D;
}

.setup .btnClicked svg path {
  fill:#FFFFFF;
}

.setup .btnClicked:hover svg path {
  fill:#FFFFFF;
}

footer {
  display: grid;
  justify-self: center;
  align-self: start;
  animation: downTop 1s 500ms backwards;
}

footer button {
  background: #02799D;
  border: 5px solid #02799D;
  border-radius: 100%;
  width: 5rem;
  height: 5rem;
}

footer button svg {
  width: 100%;
  height: 100%;
}

footer button:hover svg path {
  fill: #FFFFFF;
}

footer .soundClicked{
  background: none;
  border: none;
}

footer .soundClicked svg path {
  fill: #323238;
}

footer .soundClicked:hover svg path {
  fill: #02799D;
}

@media (max-width: 800px) {
  .page {
    width: 100%;
    height: 100%;
    padding-bottom: 1rem;
  }

  .display .timer {
    text-align: center;
    font-size: 11rem;
    line-height: 14rem;
  }

  .display {
    max-width: 29.6rem;
    gap: 3px;
    animation: topDown 1s;
  }

  .setup {
    gap: 2rem;
    justify-content: space-between;
    animation: downTop 1s 500ms backwards;
  }

  main {
    max-width: 30rem;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 0.8rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
    animation: none;
  }
}

@keyframes topDown {
  0% {
    opacity: 0;
    transform: translateY(-2rem);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes downTop {
  0% {
    opacity: 0;
    transform: translateY(2rem);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}