Let's refresh Our CSS Flexbox Memory. Here's a Tutorial & Cheat Sheet of everything you can do with CSS flexbox. Let's Go 🎖️

The original Article at FreeCodeCamp

Table of Contents --

• FlexBox Architecture
• flex-direction
• justify-content
• align-content
• align-items
• align-self
• flex - grow | shrink | wrap | basis
• Short Hands
• Conclusion

You can watch this tutorial on YouTube as well if you like:

FlexBox Architecture

So how does Flexbox architecture work? The flex-items [Contents] are distributed along the Main Axis and Cross Axis. And, depending on the flex-direction property, the layout position changes between rows and columns.

FlexBox Chart --

This chart contains every possible property and value you can use when using flexbox. You can reference it while doing the project and experiment with different values.

How to Set Up the Project

For this project, you need to know little bit of HTML, CSS, and how to work with VS code. Follow along with me ->

1. Create a folder named "Project-1" & Open VS Code
2. Create index.html & style.css files
3. Install Live Server & Run Live Server.

Or, you can just open Codepen & start coding.

At the end of this tutorial, you can make website layouts more accurately.

HTML

In HTML, write these lines of code inside the body tag 👇

<div class="container">
    <div class="box-1"> A </div>
    <div class="box-2"> B </div>
    <div class="box-3"> C </div>
</div>

CSS

target the .container class & all the boxes. Then style the boxes so that all of them looks similar. Like this 👇

Note : don't forget to put the height of the container.

.container{
   height : 100vh;
}

[class ^="box-"]{
    width: 140px;
    height: 140px;
    background-color: skyblue;
    border: 2px solid black;

// To view the letter better
    font-size: 65px;
}

But Wait....

Before starting, you need to understand the relationship between parent & child classes.

Flexbox works on the parent class, not on the children classes.

Here, the .container class is the parent & our .box-* classes are our children.

so, apply the display: flex inside .container class. And place the letters at the center of the box like this ->

.container{
    display : flex;
    height : 100vh;

// To place some gap between boxes
    gap : 25px;
}
[class ^="box-"]{
// Code from previous step are here

// Placing text at center 
    display : flex;
    justify-content : center;
    align-items : center;
}

And.... we're all set! Let's start coding. 😊

flex-direction

The Direction/Orientation in which flex-items are distributed inside flex-container.

To recreate these results, Let's write on CSS These lines ->

Note : We'll write inside .container class

.container{
//code from setup stage are here

// Change the value  👇 here to see results
    flex-direction : row;
}

justify-content

This property arranges flex-items along the MAIN AXIS inside the flex-container

To recreate these results, Write on CSS These lines ->

.container{
//code from setup stage are here

//  Change the value  👇 here to see results
    justify-content: flex-start;
}

align-content

This property arranges flex-items along the CROSS AXIS inside the flex-container. This is similar to justify-content

Please note that, without the flex-wrap property, this property doesn't work, here's the demo ->

.container{

//  Change the value  👇 here to see results
    align-content: center;

// without this line, align-content won't work
    flex-wrap: wrap;
}

align-items

This property distributes Flex-items along the Cross Axis

To recreate these results, Let's write on CSS ->

.container{
//code from setup stage are here

// Change the value 👇 here to see results
    align-items: flex-end;
}

align-self

This property works on the children classes. It positions the selected item along the Cross Axis

In total we have 6 values

• flex-start
• flex-end
• center
• baseline
• stretch
• auto

To recreate the results, select any .box-* & write

.box-2{
// Change the value 👇 here to see results
     align-self : center;
}

flex - grow | shrink | wrap | basis

The properties that we're discussing right now will work when we resize the window. Let's dive right in.

• flex-grow : grows the size of a flex-item based on width of the flex-container.
• flex-shrink : The ability for a flex item to shrink based on width of the flex-container. Opposite of flex-grow.

To achieve these results, follow me ->

Please Note : flex-grow & flex-shrink works on children classes. So, we will target all our boxes ->

.box-1{
    flex-grow: 1;
}
.box-2{
    flex-grow: 5;
}
.box-1{
    flex-grow: 1;
}

Resize the window & see the results.

To duplicate result of flex-shrink, write ->

Please note : Delete the flex-wrap property, otherwise it won't work.

.box-1{
    flex-shrink: 1;
}
.box-2{
    flex-shrink: 5;
}
.box-1{
    flex-shrink: 1;
}

Now, Resize the window & see the results.

• flex-wrap : Amount of Flex-item you want in a line/row.

This works on the .container parent class. So, write ->

.container{
    //other codes are here 

// Change value 👇 here to see results
    flex-wrap : wrap;

• flex-basis : This is similar to adding width to a flex-item, but only more flexible. flex-basis: 10em; it will set the initial size of a flex-item to 10em. Its final size will be based on available space, flex-grow, and flex-shrink.

Short Hands

• flex : It is a shorthand to flex-grow, flex-shrink and flex-basis combined.

You can try this by writing ->

Please Note : It only works on the children classes

.box-2{
    flex : 2 1 30em;
}

• flex-flow : Short hand to flex-direction & flex-wrap

You can try this by writing ->

Please Note : It only works on the parent class

.container{
    flex-flow : row wrap;
}

place-content

This is the shorthand of justify-content & align-content

Let's duplicate the results

Note : It works on the parent class

.container{
    place-content : center flex-end;
}

Credits

Kitty Avatars

Read Next :

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Conclusion

Here's Your Medal For reading till the end ❤️

Suggestions & Criticisms Are Highly Appreciated ❤️

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