Загрузчик CSS / Спиннер Progress Material angular 2+

body {
  background-color: white;
}

// demo-specific
.showbox {
position: absolute;
   
}
// end demo-specific

.loader {
  position: relative;
  margin: 0 auto;
  width: 100px;
  &:before {
    content: '';
    display: block;
    padding-top: 100%;
  }
}

.circular {
  animation: rotate 2s linear infinite;
  height: 100%;
  transform-origin: center center;
  width: 100%;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}

.path {
  stroke-dasharray: 1, 200;
  stroke-dashoffset: 0;
  animation: dash 2s ease-in-out infinite;
  stroke-linecap: round;
  stroke: #0057e7;
}

@keyframes rotate {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes dash {
  0% {
    stroke-dasharray: 20, 200;
    stroke-dashoffset: 0;
  }
  50% {
    stroke-dasharray: 100, 200;
    stroke-dashoffset: -35px;
  }
  100% {
    stroke-dasharray: 200, 200;
    stroke-dashoffset: -125px;
  }
}

    <div class = "showbox">
          <div class = "loader">
            <svg class = "circular" viewBox = "25 25 50 50">
                <circle class = "path" cx = "50" cy = "50" r = "20" fill = "none" stroke-width = "2" stroke-miterlimit = "10"/>
              </svg>
          </div>
        </div>