.loader-overlay {
    z-index: 9999;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .5);
}

/*!
 * loadme v1.0.0 (https://github.com/zx1988826/loadme)
 * Copyright 2017 Tencent, Inc.
 * Licensed under the MIT license
 */
.loadme-mask {
  background-color: #ddd;
  width: 100px;
  height: 100px;
  position: fixed;
  z-index: 99;
  left: 50%;
  top: 50%;
  margin: -50px 0 0 -50px;
  border-radius: 10px;
  opacity: 0.5;
}
.loadme-circular,
.loadme-circular:after {
  border-radius: 50%;
  width: 10em;
  height: 10em;
}
.loadme-circular {
  width: 40px;
  height: 40px;
  position: fixed;
  left: 50%;
  top: 50%;
  margin: -20px 0 0 -20px;
  z-index: 100;
  font-size: 10px;
  text-indent: -9999em;
  border-top: 1px solid rgba(237, 237, 237, 0.8);
  border-right: 1px solid rgba(237, 237, 237, 0.8);
  border-bottom: 1px solid rgba(237, 237, 237, 0.8);
  border-left: 1px solid #000;
  -webkit-transform: translateZ(0);
          transform: translateZ(0);
  -webkit-animation: loadme-circular-animate 1.1s infinite linear;
          animation: loadme-circular-animate 1.1s infinite linear;
}
@-webkit-keyframes loadme-circular-animate {
  0% {
    -webkit-transform: rotate(0deg);
            transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}
@keyframes loadme-circular-animate {
  0% {
    -webkit-transform: rotate(0deg);
            transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}