.wrapper {
  position: absolute;
  width: 100%;
  height: 100%;
  background: #fff;
  z-index: 999;
  display: none;
  top: 0;
  left: 0;
  opacity: 0.7;
}
.loader {
  position: fixed;
  left: 50%;
  top: 50%;
  margin-left: -1rem;
  margin-top: -1rem;
  width: 2rem;
  height: 2rem;
  color: #01579b;
}
.loader::before {
  position: absolute;
  width: 0.75rem;
  height: 0.75rem;
  display: block;
  content: '';
  background: currentColor;
  box-shadow: 1.25rem 0 0, 1.25rem 1.25rem 0, 0 1.25rem 0;
  -webkit-transform-origin: 1rem 1rem;
          transform-origin: 1rem 1rem;
  -webkit-animation: move 1s infinite ease-in-out;
          animation: move 1s infinite ease-in-out;
}
.loader::after {
  content: 'Cargando';
  position: absolute;
  display: block;
  top: 2.5rem;
  color: #999;
  left: 1rem;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
  -webkit-animation: text 1s infinite ease-in-out alternate;
          animation: text 1s infinite ease-in-out alternate;
}

.loader.blink::before {
  -webkit-animation: blink 1s infinite linear;
          animation: blink 1s infinite linear;
}

.loader.spin::before {
  -webkit-animation: spin 1s infinite ease-in-out;
          animation: spin 1s infinite ease-in-out;
}

@-webkit-keyframes text {
  30% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

@keyframes text {
  30% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@-webkit-keyframes move {
  0% {
    -webkit-transform: translateX(0);
            transform: translateX(0);
    box-shadow: 1.25rem 0 0, 1.25rem 1.25rem 0, 0 1.25rem 0;
  }
  100% {
    -webkit-transform: translateX(1.25rem);
            transform: translateX(1.25rem);
    box-shadow: 0 1.25rem 0, -1.25rem 1.25rem 0, -1.25rem 0 0;
  }
}
@keyframes move {
  0% {
    -webkit-transform: translateX(0);
            transform: translateX(0);
    box-shadow: 1.25rem 0 0, 1.25rem 1.25rem 0, 0 1.25rem 0;
  }
  100% {
    -webkit-transform: translateX(1.25rem);
            transform: translateX(1.25rem);
    box-shadow: 0 1.25rem 0, -1.25rem 1.25rem 0, -1.25rem 0 0;
  }
}