<div class="wrapper">
  <div class="circle"></div>
  <div class="circle"></div>
  <div class="circle"></div>
  <div class="shadow"></div>
  <div class="shadow"></div>
  <div class="shadow"></div>
  <span>Loading</span>
</div>

./loading.component.scss

body {
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100vh;
  background: radial-gradient(#9b59b6, #8e44ad);
}
.wrapper {
  width: 200px;
  height: 60px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.circle {
  width: 20px;
  height: 20px;
  position: absolute;
  border-radius: 50%;
  background-color: #056571;
  left: 15%;
  transform-origin: 50%;
  animation: circle 0.5s alternate infinite ease;
}

@keyframes circle {
  0% {
    top: 60px;
    height: 5px;
    border-radius: 50px 50px 25px 25px;
    transform: scaleX(1.7);
  }
  40% {
    height: 20px;
    border-radius: 50%;
    transform: scaleX(1);
  }
  100% {
    top: 0%;
  }
}
.circle:nth-child(2) {
  left: 45%;
  animation-delay: 0.2s;
}
.circle:nth-child(3) {
  left: auto;
  right: 15%;
  animation-delay: 0.3s;
}
.shadow {
  width: 20px;
  height: 4px;
  border-radius: 50%;
  background-color: rgba(0, 0, 0, 0.5);
  position: absolute;
  top: 62px;
  transform-origin: 50%;
  z-index: -1;
  left: 15%;
  filter: blur(1px);
  animation: shadow 0.5s alternate infinite ease;
}

@keyframes shadow {
  0% {
    transform: scaleX(1.5);
  }
  40% {
    transform: scaleX(1);
    opacity: 0.7;
  }
  100% {
    transform: scaleX(0.2);
    opacity: 0.4;
  }
}
.shadow:nth-child(4) {
  left: 45%;
  animation-delay: 0.2s;
}
.shadow:nth-child(5) {
  left: auto;
  right: 15%;
  animation-delay: 0.3s;
}
.wrapper span {
  position: absolute;
  top: 75px;
  font-family: 'Lato';
  font-size: 20px;
  letter-spacing: 12px;
  color: #056571;
  left: 15%;
}

/*  footer   */
footer {
  background-color: #222;
  color: #fff;
  font-size: 14px;
  bottom: 0;
  position: fixed;
  left: 0;
  right: 0;
  text-align: center;
  z-index: 999;
}

footer p {
  margin: 10px 0;
  font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida  Grande', 'Lucida Sans Unicode', Geneva,
    Verdana, sans-serif;
}
footer .fa-heart {
  color: red;
}
footer .fa-dev {
  color: #fff;
}
footer .fa-twitter-square {
  color: #1da0f1;
}
footer .fa-instagram {
  color: #f0007c;
}
fotter .fa-linkedin {
  color: #0073b1;
}
footer .fa-codepen {
  color: #fff;
}
footer a {
  color: #3c97bf;
  text-decoration: none;
  margin-right: 5px;
}
.youtubeBtn {
  position: fixed;
  left: 50%;
  transform: translatex(-50%);
  bottom: 45px;
  cursor: pointer;
  transition: all 0.3s;
  vertical-align: middle;
  text-align: center;
  display: inline-block;
}
.youtubeBtn i {
  font-size: 20px;
  float: left;
}
.youtubeBtn a {
  color: #ff0000;
  animation: youtubeAnim 1000ms linear infinite;
  float: right;
}
.youtubeBtn a:hover {
  color: #c9110f;
  transition: all 0.3s ease-in-out;
  text-shadow: none;
}
.youtubeBtn i:active {
  transform: scale(0.9);
  transition: all 0.3s ease-in-out;
}
.youtubeBtn span {
  font-family: 'Lato';
  font-weight: bold;
  color: #fff;
  display: block;
  font-size: 12px;
  float: right;
  line-height: 20px;
  padding-left: 5px;
}

@keyframes youtubeAnim {
  0%,
  100% {
    color: #c9110f;
  }
  50% {
    color: #ff0000;
  }
}
/* footer  */