body {
  background-color: #000;
}

#main {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

#video-desktop {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#video-mobile {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.btn-sound {
  position: absolute;
  top: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background-image: url("../../assets/img/btn_muted.svg");
  background-color: transparent;
  background-position: center;
  background-repeat: no-repeat;
  transition: all .3s ease-out;
}

.btn-sound.unmuted {
  background-image: url("../../assets/img/btn_unmuted.svg");
}

.btn-sound:focus {
  outline: none;
  box-shadow: none;
}