x-progress {
    position: relative;
    height: 4px;
    display: block;
    width: 100%;
    
    color: rgb(75, 153, 12);
    background-color: #CCC;
    
    border-radius: 2px;
    background-clip: padding-box;
    /* margin: 0.5rem 0 1rem 0; */
    margin: 0 auto;
    overflow: hidden; 
    
}

x-progress .determinate {
  position: absolute;
  background-color: inherit;
  top: 0;
  bottom: 0;
  background-color: currentColor;
  transition: width .3s linear; 
}
x-progress .indeterminate {
  background-color: currentColor;
}
x-progress .indeterminate:before {
  content: '';
  position: absolute;
  background-color: inherit;
  top: 0;
  left: 0;
  bottom: 0;
  will-change: left, right;
  -webkit-animation: indeterminate 2.1s cubic-bezier(0.65, 0.815, 0.735, 0.395) infinite;
          animation: indeterminate 2.1s cubic-bezier(0.65, 0.815, 0.735, 0.395) infinite; 
      
}
x-progress .indeterminate:after {
  content: '';
  position: absolute;
  background-color: inherit;
  top: 0;
  left: 0;
  bottom: 0;
  will-change: left, right;
  -webkit-animation: indeterminate-short 2.1s cubic-bezier(0.165, 0.84, 0.44, 1) infinite;
          animation: indeterminate-short 2.1s cubic-bezier(0.165, 0.84, 0.44, 1) infinite;
  -webkit-animation-delay: 1.15s;
          animation-delay: 1.15s; 
}

  @-webkit-keyframes indeterminate {
    0% {
      left: -35%;
      right: 100%; }
    60% {
      left: 100%;
      right: -90%; }
    100% {
      left: 100%;
      right: -90%; } 
    }
  @keyframes indeterminate {
    0% {
      left: -35%;
      right: 100%; }
    60% {
      left: 100%;
      right: -90%; }
    100% {
      left: 100%;
      right: -90%; } 
    }
  @-webkit-keyframes indeterminate-short {
    0% {
      left: -200%;
      right: 100%; }
    60% {
      left: 107%;
      right: -8%; }
    100% {
      left: 107%;
      right: -8%; } 
    }
  @keyframes indeterminate-short {
    0% {
      left: -200%;
      right: 100%; }
    60% {
      left: 107%;
      right: -8%; }
    100% {
      left: 107%;
      right: -8%; } 
    }