hexo-theme-next/source/css/_common/scaffolding/pagination.styl

$page-number-basic {
  display: inline-block;
  margin: -1px 10px 0 10px;
  padding: 0 10px;

  +mobile() {
    margin: 0 5px;
  }
}

.pagination {
  border-top: 1px solid $pagination-border;
  margin: 120px 0 0;
  text-align: center;

  .prev, .next, .page-number {
    @extend $page-number-basic;
    border-bottom: 0;
    border-top: 1px solid $pagination-link-border;
    transition: border-color $transition-ease;

    &:hover {
      border-top-color: $pagination-link-hover-border;
    }
  }

  +mobile() {
    border-top: 0;

    .prev, .next, .page-number {
      border-bottom: 1px solid $pagination-link-border;
      border-top: 0;

      &:hover {
        border-bottom-color: $pagination-link-hover-border;
      }
    }
  }

  .space {
    @extend $page-number-basic;
    margin: 0;
    padding: 0;
  }

  .page-number.current {
    background: $pagination-active-bg;
    border-color: $pagination-active-border;
    color: $pagination-active-color;
  }
}