.loader {
  z-index: 1000;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.2);
  display: flex;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  -ms-justify-content: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.loader__disabled {
  display: none;
}

.loader__inner {
  margin: 20px auto;
  width: 70px;
  height: 70px;
  position: relative;
  -webkit-transform: rotateZ(45deg);
          transform: rotateZ(45deg);

  -ms-flex-item-align: center;
  flex-item-align: center;
  -webkit-align-self: center;
  -ms-align-self: center;
  align-self: center;
}

.loader__inner .loader__inner__cube {
  float: left;
  width: 50%;
  height: 50%;
  position: relative;
  -webkit-transform: scale(1.1);
      -ms-transform: scale(1.1);
          transform: scale(1.1);
}
.loader__inner .loader__inner__cube:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #000000;
  -webkit-animation: sk-foldCubeAngle 2.4s infinite linear both;
          animation: sk-foldCubeAngle 2.4s infinite linear both;
  -webkit-transform-origin: 100% 100%;
      -ms-transform-origin: 100% 100%;
          transform-origin: 100% 100%;
}
.loader__inner .loader__inner__cube--2 {
  -webkit-transform: scale(1.1) rotateZ(90deg);
          transform: scale(1.1) rotateZ(90deg);
}
.loader__inner .loader__inner__cube--3 {
  -webkit-transform: scale(1.1) rotateZ(180deg);
          transform: scale(1.1) rotateZ(180deg);
}
.loader__inner .loader__inner__cube--4 {
  -webkit-transform: scale(1.1) rotateZ(270deg);
          transform: scale(1.1) rotateZ(270deg);
}
.loader__inner .loader__inner__cube--2:before {
  -webkit-animation-delay: 0.3s;
          animation-delay: 0.3s;
}
.loader__inner .loader__inner__cube--3:before {
  -webkit-animation-delay: 0.6s;
          animation-delay: 0.6s;
}
.loader__inner .loader__inner__cube--4:before {
  -webkit-animation-delay: 0.9s;
          animation-delay: 0.9s;
}
@-webkit-keyframes sk-foldCubeAngle {
  0%, 10% {
    -webkit-transform: perspective(140px) rotateX(-180deg);
            transform: perspective(140px) rotateX(-180deg);
    opacity: 0;
  } 25%, 75% {
    -webkit-transform: perspective(140px) rotateX(0deg);
            transform: perspective(140px) rotateX(0deg);
    opacity: 1;
  } 90%, 100% {
    -webkit-transform: perspective(140px) rotateY(180deg);
            transform: perspective(140px) rotateY(180deg);
    opacity: 0;
  }
}

@keyframes sk-foldCubeAngle {
  0%, 10% {
    -webkit-transform: perspective(140px) rotateX(-180deg);
            transform: perspective(140px) rotateX(-180deg);
    opacity: 0;
  } 25%, 75% {
    -webkit-transform: perspective(140px) rotateX(0deg);
            transform: perspective(140px) rotateX(0deg);
    opacity: 1;
  } 90%, 100% {
    -webkit-transform: perspective(140px) rotateY(180deg);
            transform: perspective(140px) rotateY(180deg);
    opacity: 0;
  }
}