.lineLoader {
    height: 3px;
    width: 100%;
    position: absolute;
    top: 0px;
    left: 0px;
    overflow: hidden;
    background-color: #ddd;
}
.lineLoader:before{
  display: block;
  position: absolute;
  content: "";
  left: -200px;
  width: 200px;
  height: 4px;
  background-color: #33C771;
  animation: loading 2s linear infinite;
}

.lineLoaderRelative {
    height: 3px;
    width: 100%;
    position: relative;
    top: 0px;
    left: 0px;
    overflow: hidden;
    background-color: #ddd;
}
.lineLoader:before {
    display: block;
    position: absolute;
    content: "";
    left: -200px;
    width: 200px;
    height: 4px;
    background-color: #33C771;
    animation: loading 2s linear infinite;
}

.lineLoaderRelative:before{
    display: block;
    position: absolute;
    content: "";
    left: -200px;
    width: 200px;
    height: 4px;
    background-color: #33C771;
    animation: loading 2s linear infinite;
}

@keyframes loading {
    from {left: -200px; width: 30%;}
    50% {width: 30%;}
    70% {width: 70%;}
    80% { left: 50%;}
    95% {left: 120%;}
    to {left: 100%;}
}