.progress_bar {
  display: block;
  width: 100%;
  height: 16px;
  text-align: left;
  border-radius: 4px;

  background-color: #404148;

  &:after {
    content: '';
    font-size: 0.8em;
    display: block;
    width: 0;
    height: 100%;
    padding-top: 0.1em;

    text-align: right;
    box-sizing: border-box;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-wrap: break-word;
    border-radius: 4px;

    color: white;
    background-color: green;
    background-size: 23px 22px;

    background-image: -webkit-repeating-linear-gradient(135deg, rgba(255, 255, 255, .35), rgba(255, 255, 255, .35) 8px, rgba(255, 255, 255, 0) 9px, rgba(255, 255, 255, 0) 16px);
    background-image: repeating-linear-gradient(-45deg, rgba(255, 255, 255, .35), rgba(255, 255, 255, .35) 8px, rgba(255, 255, 255, 0) 9px, rgba(255, 255, 255, 0) 16px);
  }
}

.progress_bar,
.progress_bar:after {
  transition: background-color 0.7s, width 0.5s;
}

.progress_bar:after {
  animation: progress_bar 4.3s linear forwards;
}

@keyframes progress_bar {
  from {
    width: 0;
    background-size: 23px 22px;
  }
  10% {
    width: 1%;
    background-size: 23px 32px;
  }
  80% {
    width: 50%;
    background-size: 23px 32px;
  }
  90% {
    width: 90%;
    background-size: 23px 32px;
  }
  98% {
    width: 92%;
    background-size: 23px 32px;
  }
  to {
    width: 100%;
    background-size: 23px 44px;
  }
}