.container-loader {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
     -ms-flex-pack: center;
   justify-content: center;
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  width: 100vw;
  padding-top: 20vh;
  z-index: 1002;
  background-color: rgba(0, 0, 0, 0.5);
}
  
.loader--text {
  margin-bottom: 24px;
  padding-left: 10px;
  padding-right: 10px;
  font-size: 28px;
  font-weight: 500;
  line-height: 1.1;
  color: #ffffff;
  text-align: center;
}
  
.loader {
  position: relative;
  height: 40px;
  width: 180px;
  margin: auto;
}
  
.loader--dot {
  position: absolute;
  height: 40px;
  width: 40px;
  border-radius: 100%;
  -webkit-animation-name: loader;
          animation-name: loader;
  -webkit-animation-timing-function: ease-in-out;
          animation-timing-function: ease-in-out;
  -webkit-animation-duration: 2.5s;
          animation-duration: 2.5s;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
  background-color: #ffffff;
}
  
.loader--dot:first-child {
  -webkit-animation-delay: -0.01s;
          animation-delay: -0.01s;
}
  
.loader--dot:nth-child(2) {
  -webkit-animation-delay: -0.2s;
          animation-delay: -0.2s;
}
  
.loader--dot:nth-child(3) {
  -webkit-animation-delay: -0.4s;
          animation-delay: -0.4s;
}
  
.loader--dot:nth-child(4) {
  -webkit-animation-delay: -0.6s;
          animation-delay: -0.6s;
}
  
@-webkit-keyframes loader {
  15% {
    -webkit-transform: translateX(0);
            transform: translateX(0);
  }
  45% {
    -webkit-transform: translateX(140px);
            transform: translateX(140px);
  }
  65% {
    -webkit-transform: translateX(140px);
            transform: translateX(140px);
  }
  95% {
    -webkit-transform: translateX(0);
            transform: translateX(0);
  }
}
  
@keyframes loader {
  15% {
    -webkit-transform: translateX(0);
            transform: translateX(0);
  }
  45% {
    -webkit-transform: translateX(140px);
            transform: translateX(140px);
  }
  65% {
    -webkit-transform: translateX(140px);
            transform: translateX(140px);
  }
  95% {
    -webkit-transform: translateX(0);
            transform: translateX(0);
  }
}