#contenedor{ 
  background-color: #00b8de; 
  display: grid;
  place-content: center;
  height: 100vh;
  color: #000;
}
#cargando2{ 
  position: relative; 
  color: #000;
  margin-top: 2em;
  letter-spacing: 0.08em;
  text-transform: uppercase
}

#rueda {
  border: 10px solid rgba(255, 255, 255, .3);
  border-radius: 50%;
  border-left-color: mediumslateblue;
  width: 80px;
  height: 80px;
  animation: giro 1s linear infinite;
}

@keyframes giro {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}