#contenedor {
    width:200px;
        height:200px;
        margin: auto;
        margin-top: 40vh;
}
.loader:before,
.loader:after,
.loader {
  border-radius: 50%;
  width: 2.5em;
  height: 2.5em;
  -webkit-animation-fill-mode: both;
  animation-fill-mode: both;
  -webkit-animation: load7 1.8s infinite ease-in-out;
  animation: load7 1.8s infinite ease-in-out;
}
.loader {
  margin: 8em auto;
  font-size: 10px;
  position: relative;
  text-indent: -9999em;
  -webkit-animation-delay: 0.16s;
  animation-delay: 0.16s;
}
.loader:before {
  left: -3.5em;
}
.loader:after {
  left: 3.5em;
  -webkit-animation-delay: 0.32s;
  animation-delay: 0.42s;
}
.loader:after1 {
  left: 3.5em;
  -webkit-animation-delay: 0.32s;
  animation-delay: 0.42s;
}
.loader:before,
.loader:after {
  content: '';
  position: absolute;
  top: 0;
}

@-webkit-keyframes load7 {
 0% {height:15px;transform:translateY(0px);background:#323232;}
    25% {height:30px;transform:translateY(15px);background:#94d6d4;}
    50% {height:15px;transform:translateY(0px);background:#fdd500;}
    75% {height:15px;transform:translateY(0px);background:red;}
    100% {height:15px;transform:translateY(0px);background:#3da7f3;}
  }
  40% {
    box-shadow: 0 2.5em 0 0 #FFF;
  }
}
@keyframes load7 {
  0%,
  80%,
  100% {
    box-shadow: 0 2.5em 0 -1.3em #ffffff;
  }
  40% {
    box-shadow: 0 2.5em 0 0 #FFF;
  }
}