amis/scss/components/_progress.scss

.#{$ns}Progress {
  height: 10px;
  background: #ebebeb;
  overflow: hidden;

  &-bar {
    float: left;
    width: 0;
    height: 100%;
    font-size: 12px;
    line-height: 10px;
    color: #fff;
    text-align: center;
    background: var(--primary);
    transition: width var(--animation-duration) ease;
  }
}