.circle {
  position: absolute;
  border: 3px solid transparent;
  border-top-color: #0d6efd;
  border-radius: 50%;
  -webkit-animation: rotate linear infinite;
  animation: rotate linear infinite;
}

.circle.one {
  height: 50px;
  width: 50px;
  left: 50px;
  top: 50px;
  -webkit-animation-duration: 0.85s;
  animation-duration: 0.85s;
}

.circle.two {
  height: 75px;
  width: 75px;
  top: 38px;
  left: 38px;
  -webkit-animation-duration: 0.95s;
  animation-duration: 0.95s;
}

.circle.three {
  height: 100px;
  width: 100px;
  top: 25px;
  left: 25px;
  -webkit-animation-duration: 1.05s;
  animation-duration: 1.05s;
}

.loader-div {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  height: 100%;
  width: 100%;
  background: rgba(255, 255, 255, 0.6);
  display: none;
}

.loader {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  margin: -90px 0 0 -75px;
}

@-webkit-keyframes rotate {
  from {
    transform: rotateZ(360deg);
  }
  to {
    transform: rotateZ(0deg);
  }
}

@keyframes rotate {
  from {
    transform: rotateZ(360deg);
  }
  to {
    transform: rotateZ(0deg);
  }
}