hexo-theme-keep/source/css/layout/_partial/progress-bar.styl

.progress-bar-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: $z-index-9;

  .pjax-progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 2px;
    width: 0;
    background: var(--pjax-progress-bar-color);
    visibility: hidden;
    opacity: 0;
    z-index: $z-index-8;
    transition();

    &.show {
      transition();
      opacity: 1;
      visibility: visible;
    }
  }


  .pjax-progress-icon {
    position: absolute;
    top: 0;
    right: 0;
    z-index: $z-index-8;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 8px 0 0;
    color: var(--default-text-color);
    visibility: hidden;
    transition();

    &.show {
      transition: visibility 0.1s linear;
      visibility: visible;
    }

    i {
      font-size: 1.12rem;
    }
  }


  .scroll-progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: $scroll-progress-bar-height;
    visibility: hidden;
    background: var(--primary-color);
    transition: all 0.1s ease;
    z-index: $z-index-7;

    &.hide {
      transition: none;
      visibility: hidden;
    }
  }
}