styles.css

body {
  background-color: black;
  margin: 0;
  padding: 0;
  overflow: hidden;
  color: white;
  font-family: "Courier New", Courier, monospace;
}

.paddle {
  position: fixed;
  bottom: 0;
  margin-bottom: 0.5vmin;
  background-color: white;
  border-radius: 1vmin;
  width: 8vw;
  min-height: 12px;
  height: 2vmin;
}

.ball {
  display: none;
  background-color: white;
  border-radius: 50%;
  position: fixed;
  min-width: 10px;
  min-height: 10px;
  width: 1.75vmin;
  height: 1.75vmin;
  transform: translateX(-50%) translateY(-50%);
}

.overlay {
  display: none;
  text-align: center;
  background: black;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translateX(-50%) translateY(-50%);
  z-index: 5;
}

#scoreBoard,
#debug {
  text-align: end;
  transform: none;
  top: 0;
  left: auto;
  margin: 2vmin;
  right: 0;
  display: block;
  z-index: 10;
  background: transparent;
}

.bricks {
  position: relative;
  margin: 10vh auto;
  width: 80vw;
  height: 50vh;
  /* border: 1px solid white; */
}

#timer {
  top: 75vh;
  font-size: 15vmin;
}

.brick {
  /* background: linear-gradient(45deg, green, black, blue); */
  /* box-shadow: inset 0 0 10px 10px #00820090;
  background: #00ff00; */
  margin: 0;
  border: 1px solid white;
}

.hit {
  background: none !important;
  box-shadow: none !important;
  border: 1px solid transparent;
}

.toShrink {
  width: -webkit-fill-available;
  height: -webkit-fill-available;
  background: inherit;
  transform: scale(0);
  animation: shrink 1s linear;
}

.powerup {
  position: absolute;
  z-index: 20;
}

.powerup img {
  width: 5vw;
  filter: invert(1);
}

.shield {
  background: lightblue;
  margin: 0;
  padding: 0;
  position: absolute;
  bottom: 0;
  height: 0.5vmin;
  width: -webkit-fill-available;
}

@keyframes shrink {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(0);
  }
}

@media screen and (max-width: 600px) {
  .paddle {
    width: 20vw;
  }
  .powerup img {
    width: 15vw;
  }
}