hexo-theme-next/source/css/_schemes/Muse/_sidebar.styl

if (hexo-config('sidebar.position') == 'right') {
  .sidebar-active {
    +desktop() {
      padding-right: $sidebar-desktop;
    }
  }

  .sidebar {
    right: 0 - $sidebar-desktop;

    .sidebar-active & {
      right: 0;
    }
  }
} else {
  .sidebar-active {
    +desktop() {
      padding-left: $sidebar-desktop;
    }
  }

  .sidebar {
    left: 0 - $sidebar-desktop;

    .sidebar-active & {
      left: 0;
    }
  }
}

.sidebar {
  background: $black-deep;
  bottom: 0;
  if (!hexo-config('back2top.sidebar')) {
    box-shadow: inset 0 2px 6px black;
  }
  position: fixed;
  top: 0;
  transition: all $transition-ease-out;
  width: $sidebar-desktop;
  z-index: $zindex-2;

  a, span.exturl {
    border-bottom-color: $black-light;
    color: $grey-dark;

    &:hover {
      border-bottom-color: $gainsboro;
      color: $gainsboro;
    }
  }
}

.links-of-blogroll-item {
  if (hexo-config('links_settings.layout') == 'inline') {
    display: inline-block;
  }
  padding: 2px 10px;

  a, span.exturl {
    box-sizing: border-box;
    display: inline-block;
    max-width: 280px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}