body {
  margin: 0;
  padding: 0;
  height: 100vh;
  background-color: #292929;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}


.container {
  position: relative;
  width: 320px;
  height: 660px;
  overflow: hidden;
  z-index: 1;
  border-radius: 12px;


  box-shadow: 0 0 20px #a42f26,
              0 0 40px #a42f26;
}



.tela {
  position: absolute;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  display: none;
}

.tela.ativa {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}


.botao-transparente {
  position: absolute;
  background: transparent;
  border: none;
  cursor: pointer;
}