body {
  width: 7.5rem;
  margin: 0 auto;
  font-size: 16px;
  overflow: hidden;
}

/* 1rem = 100px */
.actPWA_wrapper {
  background-repeat: no-repeat;
  background-size: 100%;
  min-height: 100vh;
  position: relative;
}

.download-button-wrapper {
  width: 5.54rem;
  height: 0.97rem;
  position: absolute;
  margin: 0 auto;
  left: 50%;
  top: 50%;
  transform: translateX(-50%) translateY(3.5rem);
}

.download-button {
  width: 100%;
  height: 100%;
  animation: breathe 1s infinite alternate;
}

.license {
  position: absolute;
  width: 7rem;
  bottom: 0.22rem;
  font-size: 0.16rem;
  font-weight: bold;
  text-align: center;
  left: 50%;
  top: 50%;
  transform: translateX(-50%) translateY(5rem);
}

.back {
  width: 0.6rem;
  height: 0.6rem;
  position: absolute;
  left: 0.23rem;
  top: 0.23rem;
}

@keyframes breathe {
  0% {
    transform: scale(1);
  }

  100% {
    transform: scale(1.1);
  }
}