style.css

.container {
    display: -webkit-box;
    display: flex;
    -webkit-box-align: center;
            align-items: center;
    -webkit-box-pack: center;
            justify-content: center;
    min-height: 100vh;
    background-color:blanchedalmond;
  }
  
  .loader {
    max-width: 15rem;
    width: 100%;
    height: auto;
    stroke-linecap: round;
  }
  
  circle {
    fill:none;
    stroke-width: 10;
    -webkit-animation-name: preloader;
            animation-name: preloader;
    -webkit-animation-duration: 3s;
            animation-duration: 3s;
    -webkit-animation-iteration-count: infinite;
            animation-iteration-count: infinite;
    -webkit-animation-timing-function: ease-in-out;
            animation-timing-function: ease-in-out;
    -webkit-transform-origin: 170px 170px;
            transform-origin: 170px 170px;
    will-change: transform;
  }
  circle:nth-of-type(1) {
    stroke-dasharray: 550px;
  }
  circle:nth-of-type(2) {
    stroke-dasharray: 500px;
  }
  circle:nth-of-type(3) {
    stroke-dasharray: 450px;
  }
  circle:nth-of-type(4) {
    stroke-dasharray: 300px;
  }
  circle:nth-of-type(1) {
    -webkit-animation-delay: -0.20s;
            animation-delay: -0.20s;
  }
  circle:nth-of-type(2) {
    -webkit-animation-delay: -0.40s;
            animation-delay: -0.40s;
  }
  circle:nth-of-type(3) {
    -webkit-animation-delay: -0.60s;
            animation-delay: -0.60s;
  }
  circle:nth-of-type(4) {
    -webkit-animation-delay: -0.80s;
            animation-delay: -0.80s;
  }
  
  @-webkit-keyframes preloader {
    50% {
      -webkit-transform: rotate(360deg);
              transform: rotate(360deg);
    }
    100% {
      -webkit-transform: rotate(-360deg);
              transform: rotate(-360deg);
    }
  }
  
  @keyframes preloader {
    50% {
      -webkit-transform: rotate(360deg);
              transform: rotate(360deg);
    }
    100% {
      -webkit-transform: rotate(-360deg);
              transform: rotate(-360deg);
    }
  }