<section class="container">
  <div>
  <div>
    <span class="one h6"></span>
    <span class="two h3"></span>
  </div>
</div>


<div>
  <div>
    <span class="one h1"></span>
    <span class="two h4"></span>
  </div>
</div>


<div>
  <div>
    <span class="one h5"></span>
    <span class="two h2"></span>
  </div>
</div>
</section>

html,
body{
  padding:0;
  margin:0;
  width:100%;height:100%;
  display:flex;
  justify-content:center;
  align-items:center;
  background:#ffe2b8
}

.container{
  display:flex;
  justify-content:center;
  align-items:center;
}

div{
  position:absolute;
  width:90px;height:51px;
}

div:nth-of-type(2){transform:rotate(60deg)}
div:nth-of-type(3){transform:rotate(-60deg)}


div div{width:100%;height:100%;position:relative}

div div span{
  position:absolute;
  width:4px;height:0%;
  background:#053146;z-index:999999;
}

.h1{left:0;
  animation: load1 7.2s ease infinite;
}
.h2{right:0;
  animation: load2 7.2s ease .6s infinite;
}
.h3{right:0;
  animation: load3 7.2s ease 1.2s infinite;
}
.h4{right:0;
  animation: load4 7.2s ease 1.8s infinite;
}
.h5{left:0;
  animation: load5 7.2s ease 2.4s infinite;
}
.h6{left:0;
  animation: load6 7.2s ease 3s infinite;
}

@keyframes load1 {
  0%{bottom:0;height:0}
  6.944444444%{bottom:0;height:100%}
  50%{top:0;height:100%}
  59.944444433%{top:0;height:0}
/*   91.6666667%{top:0;height:0%;} */
}

@keyframes load2 {
  0%{top:0;height:0}
  6.944444444%{top:0;height:100%}
  50%{bottom:0;height:100%}
  59.944444433%{bottom:0;height:0}
/*   91.6666667%{bottom:0;height:0%} */
}

@keyframes load3 {
  0%{top:0;height:0}
  6.944444444%{top:0;height:100%}
  50%{bottom:0;height:100%}
  59.94444443%{bottom:0;height:0}
/*   91.6666667%{bottom:0;height:0%;} */
}

@keyframes load4 {
  0%{top:0;height:0}
  6.944444444%{top:0;height:100%}
  50%{bottom:0;height:100%}
  59.94444443%{bottom:0;height:0}
/*   91.6666667%{bottom:0;height:0%;} */
}

@keyframes load5 {
  0%{bottom:0;height:0}
  6.944444444%{bottom:0;height:100%}
  50%{top:0;height:100%}
  59.94444443%{top:0;height:0}
/*   91.6666667%{top:0;height:0%;} */
}

@keyframes load6 {
  0%{bottom:0;height:0}
  6.944444444%{bottom:0;height:100%}
  50%{top:0;height:100%}
  59.94444443%{top:0;height:0}
/*   91.6666667%{top:0;height:0%;} */
}