.loader {
  color #fff
  position fixed
  box-sizing border-box
  left -9999px
  top -9999px
  width 0
  height 0
  overflow hidden
  z-index 999999
  &:after,
  &:before {
    box-sizing border-box
    display none
  }

  &.is-active {
    background-color rgba(0,0,0,.75)
    width 100%
    height 100%
    left 0
    top 0
  }
  &.is-active:after,
  &.is-active:before {
    display block
  }
}


.loader-normal:after {
  content ''
  position fixed
  width 48px
  height 48px
  border solid 8px #fff
  border-left-color rgba(0, 0, 0, 0)
  border-radius 50%
  top calc(50% - 24px)
  left calc(50% - 24px)
  animation rotation 1s linear infinite
}
.loader-normal.half:after {
  border-right-color rgba(0, 0, 0, 0)
}
.loader-normal.reverse:after {
  animation-direction reverse
}


.loader-double:after,.loader-double:before {
  content: '';
  position: fixed;
  border-radius: 50%;
  border: solid 8px;
  animation: rotation 1s linear infinite
}

.loader-double:after {
  width: 48px;
  height: 48px;
  border-color: #fff;
  border-left-color: transparent;
  top: calc(50% - 24px);
  left: calc(50% - 24px)
}

.loader-double:before {
  width: 64px;
  height: 64px;
  border-color: #eb974e;
  border-right-color: transparent;
  animation-duration: 2s;
  top: calc(50% - 32px);
  left: calc(50% - 32px)
}

.loader-bar:after {
  content ''
  position fixed
  top 50%
  left 50%
  width 200px
  height 20px
  box-shadow inset 0 10px 0 rgba(255,255,255,0.1), 0 0 0 3px rgba(0,0,0,0.05)
  transform translate(-50%, -50%)
  background linear-gradient(-45deg, #4183d7 25%, #52b3d9 25%, #52b3d9 50%, #4183d7 50%, #4183d7 75%, #52b3d9 75%, #52b3d9)
  background-size 20px 20px
  animation moveBar 1s linear infinite reverse
}

.loader-bar.round:after {
  border-radius 15px
}

.loader-bar.reverse:after {
  animation-direction normal
}

@keyframes moveBar {
  from {
    background-position 0 0
  }
  to {
    background-position 20px 20px
  }
}

@keyframes rotation {
  from {
    transform rotate(0)
  }
  to {
    transform rotate(359deg)
  }
}