Gain insights into designing mobile-responsive web layouts using Flexbox. Delve into Box Model basics, Flexbox containers, and item alignment, and apply your knowledge to create stunning, mobile-first websites.

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In this course, you will get hands-on experience in designing mobile-responsive web layouts using Flexbox. You will start with the basics like the Box Model and the process of layouting.

You will then move on to advanced concepts such as Flexbox containers, and aligning individual Flexbox items. Near the end of the course, you will put everything you just learned into practice. You will work on a project that focuses on developing a mobile-first website where you’ll experiment with page layout, headers, footers, and a lot more.

By the end of this course, you will be able to use Flexbox in your own projects to create beautiful layouts.

Designing Web Layouts with CSS and Flexbox

While `justify-content` positions Flex-items on the main axis, `align-items` positions each Flex item in the direction of the cross axis.

Similarly to `justify-content`, `align-items` is also a container propery. 

# Align-items values

In case of `justify-content`, we may align multiple Flex items that are on a line parallel with the main axis. This is why `space-around`, `space-between`, and `space-evenly` make sense for `justify-content`.

The containers of `align-items` are placed on different lines that are parallel with the main axis. Therefore, even though we align all items on container level, in reality, each element is moved individually, without the influence of other flex-items. Therefore, `space-around`, `space-between`, and `space-evenly` do not make sense for cross-axis movements. We only keep `flex-start`, `flex-end`, and `center`, and introduce some new values:

- `stretch`: this is the default value of `align-items`, which means, you won't see the `stretch` value often in the code. Stretch stretches each flex-item in the direction of the cross-axis as much as possible.
- `flex-start`: each element is glued to the start of the cross-axis of its container. In the case of a vertical cross-axis, Flex items are moved up to the top of their Flex container. In case of a horizontal cross-axis, Flex items are moved all the way to the left of their container. 
- `flex-end`: each element is glued to the end of the cross-axis of its container. In case of a vertical cross-axis, Flex-items are moved to the bottom of their Flex container. In case of a horizontal cross-axis, Flex-items are moved all the way to the right of their container.
- `center`: each element is centered in the direction of the cross-axis, with respect to the space available in their container.
- `baseline`: Flex-items are aligned in the direction of the cross-axis of the container based on their baselines.

# Align-items example

Let's explore the five options on a horizontal element. 

> In the case of `align-items: stretch`, the height of the Flex-items should not be specified, otherwise stretching won't work.

This lesson introduces the align-items Flexbox container setting to position your Flexbox child elements along the cross axis.

Getting Started

Using Flexbox Containers

Aligning Individual Flexbox Items

Designing a Mobile-first Website Using Flexbox

Flexbox Conclusion and Next Steps

Align-items