.processing {
    display:    none;
    position:   fixed;
    z-index:    99999;
    top:        0;
    left:       0;
    height:     100%;
    width:      100%;
    background: rgba(189, 184, 184, 0.8) 
                none
                50% 50% 
                no-repeat;
    align-items: center;
    justify-content: center;
}
body.loading {
    overflow: hidden;
}
body.loading .processing {
    display: flex;
}

.loader {
  animation: rotate 1s infinite;
  height: 50px;
  width: 50px;
}

.loader:before,
.loader:after {
  border-radius: 50%;
  content: "";
  display: block;
  height: 20px;
  width: 20px;
}
.loader:before {
  animation: ball1 1s infinite;
  background-color: #fff;
  box-shadow: 30px 0 0 #ff3d00;
  margin-bottom: 10px;
}
.loader:after {
  animation: ball2 1s infinite;
  background-color: #ff3d00;
  box-shadow: 30px 0 0 #fff;
}

@keyframes rotate {
  0% { transform: rotate(0deg) scale(0.8) }
  50% { transform: rotate(360deg) scale(1.2) }
  100% { transform: rotate(720deg) scale(0.8) }
}

@keyframes ball1 {
  0% {
    box-shadow: 30px 0 0 #ff3d00;
  }
  50% {
    box-shadow: 0 0 0 #ff3d00;
    margin-bottom: 0;
    transform: translate(15px, 15px);
  }
  100% {
    box-shadow: 30px 0 0 #ff3d00;
    margin-bottom: 10px;
  }
}

@keyframes ball2 {
  0% {
    box-shadow: 30px 0 0 #fff;
  }
  50% {
    box-shadow: 0 0 0 #fff;
    margin-top: -20px;
    transform: translate(15px, 15px);
  }
  100% {
    box-shadow: 30px 0 0 #fff;
    margin-top: 0;
  }
}