.loader {
  margin: 0 !important;
  min-width: 15px;
  min-height: 15px;
  max-width: 100px;
  max-height: 100px;
  border: 1.5px solid #999;
  border-bottom-color: transparent;
  border-radius: 50%;
  margin: 0 auto;
  animation: loader 500ms linear infinite;
}

.medio {
  width: 35px;
  height: 35px;
}


@keyframes loader {
  to {
    transform: rotate(360deg);
  }
}