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.

CBCA - CSS with Flexbox (Intermediate)-01.jpg

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

# Formatting the third blogpost

Let's make the third blogpost highlighted by adding a `highlighted` class to it:

```css
<div class="blogpost highlighted">
  <img
    src="/udata/WPVy7kaW8e6/720x480.png" 
    alt="placeholder image"
    class="blogpost-thumbnail" />
  <h3 class="blogpost-title">Third post</h3>
  <p class="blogpost-preview">This is an example post.</p>
</div>
```

We will use a `lightskyblue` background color to differentiate between the highlighted and non-highlighted color. Changing the order of the blogposts is possible above the first breakpoint because from a small screen size and above, the blogposts appear in a Flexbox. 

Therefore, it is sufficient to set the order of the highlighted blogpost to `-1`:

```css
.blogpost.highlighted {
    order: -1;
    background-color: lightskyblue;
}
```

We do not have this luxury for the mobile view because the layout is currently not a Flexbox. Therefore, we will have to change the block layout to Flexbox.

First, we will move the following rules from the first breakpoint to the default styles:

```css
.blogposts {
  display: flex;
  flex-wrap: wrap;
}
```

Interestingly, this change is sufficient in itself, because the width of the Flex items is set to the full width of the container anyway. 

Remember, always think about choosing the most compact and descriptive stylesheet. In this exercise, the highlighted post feature revealed an unnecessary distinction between the mobile screen size and the medium screen size, because it makes no sense to keep the display mode of the blogpost container different for the mobile screen size and the medium screen size.

The final code looks as follows: 



# Formatting the third blogpost

Let's make the third blogpost highlighted by adding a `highlighted` class to it:

```css
<div>
  <img
    src="/udata/WPVy7kaW8e6/720x480.png" 
    alt="placeholder image"
    />
  <h3>Third post</h3>
  <p>This is an example post.</p>
</div>
```

We will use a `lightskyblue` background color to differentiate between the highlighted and non-highlighted color. Changing the order of the blogposts is possible above the first breakpoint because from a small screen size and above, the blogposts appear in a Flexbox. 

Therefore, it is sufficient to set the order of the highlighted blogpost to `-1`:

```css
.blogpost.highlighted {
    order: -1;
    background-color: lightskyblue;
}
```

We do not have this luxury for the mobile view because the layout is currently not a Flexbox. Therefore, we will have to change the block layout to Flexbox.

First, we will move the following rules from the first breakpoint to the default styles:

```css
.blogposts {
  display: flex;
  flex-wrap: wrap;
}
```

Interestingly, this change is sufficient in itself, because the width of the Flex items is set to the full width of the container anyway. 

Remember, always think about choosing the most compact and descriptive stylesheet. In this exercise, the highlighted post feature revealed an unnecessary distinction between the mobile screen size and the medium screen size, because it makes no sense to keep the display mode of the blogpost container different for the mobile screen size and the medium screen size.

The final code looks as follows: 



In this lesson, we will change the order of blogposts based on a feature that positions the highlighted blogpost first.

Getting Started

Using Flexbox Containers

Aligning Individual Flexbox Items

Designing a Mobile-first Website Using Flexbox

Flexbox Conclusion and Next Steps

Highlighted Blogposts

Formatting the third blogpost