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HTML: Nested lists

When making a to-do list, it may be necessary to break items down into several additional sub-items. For example, in the to-do list, the item "Go to the store" may contain a shopping list.

Nested lists are used to create this structure. This allows you to insert a new list as a list item, rather than just text, creating a complex structure:

  • Go to the store
    • Buy milk
    • Buy bread
  • Take a class on Code Basics

In HTML it looks like this:

  <li>Go to the store
      <li>Buy milk</li>
      <li>Buy bread</li>
  <li>Take a class on Code Basics </li>

It is important to note that the nested list is part of the list item and is inside the <li> tag:

<li>Go to the store
    <li>Buy milk</li>
    <li>Buy bread</li>

This nesting allows you to preserve semantics and indicate that the nested list refers specifically to "Go to the store" and not to any other item.

You can nest different kinds of lists into each other: bulleted into numbered and vice versa. The main thing is to monitor the opening and closing of tags. In the case of an error, the browser will try to correct the error itself, but it may not be correct.


Create the markup for the list:

  1. The JavaScript profession
    • Frontend
    • Backend
  2. The PHP Profession
The exercise doesn't pass checking. What to do? 😶

If you've reached a deadlock it's time to ask your question in the «Discussions». How ask a question correctly:

  • Be sure to attach the test output, without it it's almost impossible to figure out what went wrong, even if you show your code. It's complicated for developers to execute code in their heads, but having a mistake before their eyes most probably will be helpful.
In my environment the code works, but not here 🤨

Tests are designed so that they test the solution in different ways and against different data. Often the solution works with one kind of input data but doesn't work with others. Check the «Tests» tab to figure this out, you can find hints at the error output.

My code is different from the teacher's one 🤔

It's fine. 🙆 One task in programming can be solved in many different ways. If your code passed all tests, it complies with the task conditions.

In some rare cases, the solution may be adjusted to the tests, but this can be seen immediately.

I've read the lessons but nothing is clear 🙄

It's hard to make educational materials that will suit everyone. We do our best but there is always something to improve. If you see a material that is not clear to you, describe the problem in “Discussions”. It will be great if you'll write unclear points in the question form. Usually, we need a few days for corrections.

By the way, you can participate in courses improvement. There is a link below to the lessons course code which you can edit right in your browser.


  • At each nesting level the labeled list changes its marker. This is done to visually distinguish nested lists

If you got stuck and don't know what to do, you can ask a question in our community