Prototype Series of Blog Posts

Some of our articles are part of a series. We currently list and link to articles in a series manually. This is a pain point because it means every time you add a new article, you have to go through and update each of the old articles. In addition, the design isn't very polished or implemented consistently.

We should prototype what an article in a series should look like. Some things we should consider:

- Where should the table of contents appear in the article?
- How do we show which article in the series is current?
- How do we account for future articles?
- Should the design for two-part and multi-part articles be the same?

Examples of articles in a series:

- [In Progress](https://cloudfour.com/thinks/traditional-web-design-process-is-fundamentally-broken/)
- [Completed](https://cloudfour.com/thinks/responsive-images-101-definitions/)
- [Two Part](https://cloudfour.com/thinks/generating-svg-solar-systems-part-1-setting-the-scene/)

Start by reviewing the linked In Progress, Completed, and Two Part example articles to compare their current series navigation and designs. Define the prototype's scope around placement, current and future articles, and two-part versus multi-part behavior; the issue is done when a concrete design direction is agreed.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.