Learn CSS flexbox in 10 minutes! 💪

Summary

This video offers a concise introduction to using Flexbox in CSS, demonstrating key concepts such as flex direction, justify content, align items, flex wrap, and more. The instructor walks through setting up a container with multiple boxes and applying various Flexbox properties to control layout, alignment, and spacing. Viewers will learn how to manipulate the main and cross axes, adjust item order, and use properties like gap and align-self to create responsive designs. The tutorial is designed to be accessible, making Flexbox easier to understand for beginners.

Takeaways

• 📝 Introduction to Flexbox: The video provides a quick start guide on using Flexbox in CSS.
• 💻 Basic Setup: Create a container with child divs, each with a class 'box' and IDs for individual identification.
• 🎨 Styling Boxes: Set dimensions, background colors, font size, text alignment, and border radius for the box elements.
• 🔄 Flex Direction: Control the direction of the layout with 'row', 'row-reverse', 'column', and 'column-reverse'.
• 📏 Justify Content: Align elements on the main axis using properties like 'flex-start', 'flex-end', 'center', 'space-between', 'space-around', and 'space-evenly'.
• 🔄 Align Items: Align elements on the cross axis with 'flex-start', 'flex-end', 'center', and 'baseline'.
• 🔄 Flex Wrap: Manage overflow with 'wrap', 'nowrap', and 'wrap-reverse' to handle multiple lines.
• 📏 Align Content: Distribute space between rows when using 'flex-wrap' with properties like 'flex-start', 'flex-end', 'center', 'space-between', and 'space-evenly'.
• 🔄 Align Self: Apply individual alignment to a flex item on the cross axis, overriding 'align-items'.
• 🔄 Order Property: Change the visual order of flex items regardless of their order in the HTML.
• 📏 Gap Properties: Introduce spacing between columns and rows with 'column-gap' and 'row-gap'.

Q & A

What is the main topic of the video script?

The main topic of the video script is an introduction to using Flexbox in CSS.

How many inner div elements are created in the HTML file according to the script?

Four inner div elements are created in the HTML file.

What class is assigned to the inner div elements in the script?

The class 'box' is assigned to the inner div elements.

What is the purpose of setting the 'display' property to 'flex' on the container class?

Setting the 'display' property to 'flex' on the container class enables the use of Flexbox properties to arrange the child elements.

What does the 'flex-direction' property do in Flexbox?

The 'flex-direction' property in Flexbox defines the main axis and the direction of the flex items (row, row-reverse, column, column-reverse).

How does 'justify-content' affect the alignment of flex items on the main axis?

The 'justify-content' property sets the alignment of flex items on the main axis with options like flex-start, flex-end, center, space-between, space-around, and space-evenly.

What is the default value of the 'align-items' property in Flexbox?

The default value of the 'align-items' property in Flexbox is 'flex-start'.

What does the 'flex-wrap' property control in a Flexbox layout?

The 'flex-wrap' property controls whether the flex items are forced into a single line or allowed to wrap onto additional lines.

What is the purpose of the 'align-self' property in Flexbox?

The 'align-self' property allows for the alignment of individual flex items on the cross axis, overriding the 'align-items' property of the parent container.

How can the order of flex items be changed using the 'order' property?

The 'order' property can be used to change the order of flex items by assigning numerical values, with lower numbers indicating earlier placement in the layout.

What are the different gap properties available in Flexbox for controlling spacing between items?

The gap properties available in Flexbox for controlling spacing are 'gap', 'column-gap', and 'row-gap', which can be set to values like '1em' or pixels to add space between items.

Outlines

00:00

📐 Introduction to Flexbox in CSS

The script begins with an introduction to Flexbox, a CSS layout mode used for arranging elements in a container. The presenter guides through setting up a basic HTML structure with a container and four div elements, each with a unique ID and class. The style is then applied to these elements, defining their size, color, and text properties. The explanation continues with the application of Flexbox properties to the container, demonstrating how to change the default arrangement of the child elements using 'flex-direction', 'justify-content', and 'align-items'. The presenter also discusses the effects of these properties on the layout when the container size is adjusted.

05:02

🔄 Advanced Flexbox Properties and Techniques

This paragraph delves into more advanced aspects of Flexbox, including the 'flex-wrap' and 'align-content' properties, which control the wrapping of elements and the distribution of space in a multi-line flex container. The presenter illustrates how to manage the order of elements using the 'order' property and the 'align-self' property, which allows for individual alignment of flex items. The script concludes with a demonstration of how to add gaps between rows and columns with 'row-gap' and 'column-gap', providing a comprehensive overview of the capabilities of Flexbox in creating responsive and adaptable layouts.

Keywords

💡Flexbox

Flexbox is a CSS layout module that provides a more efficient way to lay out, align, and distribute space among items in a container, even when their size is unknown or dynamic. In the video, the main theme revolves around introducing Flexbox, demonstrating how to set up a basic layout using it, and exploring various properties to control the alignment and distribution of child elements within a container.

💡Container

In the context of Flexbox, a container is the parent element that defines the flex context for its child elements. The script describes setting up a 'container' class in HTML and then using CSS to style it as a flex container, which is essential for applying Flexbox properties to its child elements, the 'box' divs in this case.

💡Box

The term 'box' in the script refers to the child elements within the flex container. These are div elements with a class name 'box' that are used to demonstrate the effects of various Flexbox properties. Each box is styled individually and then collectively influenced by the container's flex properties.

💡Flex Direction

Flex Direction is a property in Flexbox that defines the direction of the main axis (row or column). The script explains how changing this property from 'row' to 'row-reverse' or 'column' affects the arrangement of the 'box' elements, determining their orientation within the flex container.

💡Justify Content

Justify Content is a Flexbox property that aligns the items along the main axis. The video script illustrates different values like 'flex-start', 'flex-end', 'center', 'space-between', and 'space-around', showing how they affect the distribution of space between and around the 'box' elements.

💡Align Items

Align Items is used to align the flex items along the cross axis on the same line. The script demonstrates how this property can be used to align the 'box' elements at the start, center, or end of the cross axis, and how it affects vertical alignment within the flex container.

💡Border Radius

Border Radius is a CSS property that defines the radius of an element's corners, creating rounded corners. In the script, border radius is applied to the 'box' elements to round their corners, which is an example of individual styling applied before exploring Flexbox properties.

💡Flex Wrap

Flex Wrap determines whether the flex items are forced into a single line or can wrap onto additional lines. The script explains how setting 'flex-wrap' to 'wrap' allows the 'box' elements to flow onto a new line when there isn't enough room within the container.

💡Align Content

Align Content is a property used when there are multiple lines of flex items and there is space around them. The script shows how 'align-content' can be used to distribute space between these lines, with values like 'flex-start', 'flex-end', 'center', 'space-between', and 'space-around'.

💡Gap

The 'gap' properties, such as 'column-gap' and 'row-gap', are used to create space between rows and columns of flex items. The script mentions setting these properties to add spacing between the 'box' elements, enhancing the visual layout by avoiding a cluttered appearance.

💡Align Self

Align Self allows the default alignment for each individual flex item to be overridden. The script demonstrates how setting 'align-self' on a specific 'box' can change its alignment on the cross axis independently of the other items, providing control over individual item positioning.

💡Order

Order is a property that controls the order in which flex items appear within the flex container, regardless of their order in the HTML. The script shows how setting the 'order' property on 'box' elements can change their sequence, allowing for more flexible layout arrangements.

Highlights

Introduction to using flexbox in CSS within 10 minutes.

Creating a container class with four inner div elements named 'box'.

Setting individual IDs and inner text for each box from one to four.

Styling the boxes with width, height, background colors, and other properties.

Using HSL values for background colors to provide a color scheme.

Applying a border radius to round the corners of the boxes.

Setting the display property of the container to 'flex' to enable flexbox.

Exploring the 'flex-direction' property to arrange elements in a row or column.

Demonstrating 'justify-content' to align elements on the main axis.

Using 'space-between' and 'space-around' for distributing space between elements.

Adjusting the cross-axis alignment with the 'align-items' property.

Adding a border and increasing the container's height for visual demonstration.

Using 'flex-wrap' to allow elements to wrap onto multiple lines.

Introducing 'align-content' to align wrapped lines within the container.

Adding gaps between rows and columns with 'row-gap' and 'column-gap'.

Applying 'align-self' to individually align elements on the cross-axis.

Changing the order of elements using the 'order' property.

Concluding the introduction to flexbox with a summary of its capabilities.

Transcripts

hey what's going on everybody in this

topic I'm gonna give you an introduction

to using flexbox in CSS in about 10

minutes or so why don't you go ahead and

sit back relax and enjoy the show

all right let's jump in everybody we

have a little bit of setup to do we'll

create a development with the class of

container

within our container class we'll create

a few developments we'll create four

these will be boxes

for the class I will set that to be box

the first inner development will have an

ID of box one

the inner text will be one let's copy

our inner development pasted three times

for a total of four

change box 1 to box two for the next

element

then three

then four and that's all we need for our

HTML file let's go to our style sheet

we'll style our boxes we will select the

Box class

I'll set the width to be 150 pixels

same thing goes with the height

let's change the background colors we'll

begin with the ID of box one

I will set the background color to be

something red

I'll use hsl values because I like them

let's go with that then let's color box

two

box two let's make that yellow

box three will be green

then box four will be blue

let's change the font size real quick

font size 8 em

then text align Center

I'll add a border radius just to round

the corners border radius 15 pixels

and that is all the setup we'll need we

are ready to begin

with our container class we can Flex all

of the elements within this container

meaning all of these inner div elements

so we'll take our container class dot

container

then set the display property to be Flex

you can see that the positioning of

these elements has already changed by

default the flex Direction property is

set to row

you can see that there's no apparent

change when I refresh the page

for a row but in reverse order we can

set Flex direction to be row reverse

so now one is on the right hand side

followed by two three then four

to arrange these elements within a

column we can set Flex direction to be

column

or even column reverse

then at the bottom we have one then two

three then four

so that's Flex Direction let's delete

the flex Direction property

then we have the justify content

property

justify content sets the alignment on

the main axis think of the x-axis by

default it's Flex start there's no

apparent change

flex and would justify the content at

the end

see we're beginning with four then three

two and one when we had Flex Direction

set to row reverse it was one two three

four but in this case it's four three

two one then there's Center if you need

to Center align these elements on the

main axis

we can place the extra space evenly

between each of these elements by

setting justify content to space

between

and if I were to expand this page

the space between them is increasing

you also have space around

the area outside of these elements is

also included now with space around

then we have space evenly

all right and that is the Justified

content property we can justify elements

on the main axis then there's the cross

axis think of it as the y-axis up and

down what we'll need to do in this

example is expand our container just to

show you the size of the container I

will add a border to The Container class

border 10 pixels

solid black

here's my current container

I will increase the height of the

container

let's set the height to be 90 viewport

height units

so this is the total size of my

container now

ninety percent of the height of the web

page

what we'll use now is the Align items

property which is used for the cross

access

align Dash items

the default is flex start there's no

change

flex and we'll place these elements at

the bottom of our container

then there's Center align item Center

that will place them in the middle of

the Cross axis

then there's Baseline

so with Baseline the text is going to be

aligned they're all the same size though

we can't really notice the difference

with box one let me change the font size

font size 1 em you can see that the

number one is aligned with the rest of

the characters

so if I were to increase the font size

you can see that they're still aligned

but let's eliminate that font size

property

let's delete our align items property

we'll need more elements let's cop BR4

inner developments paste them we should

have a total of eight one two three four

one two three four you can see that

these items are getting squished now

they're all being compressed we can set

the flex wrap property so with our

container I will set the flex wrap

property to be wrap

these elements will now wrap if there's

not enough space if I were to expand the

size of my container

there's now enough room but if we run

out of room they'll be pushed down

further down the page

by default Flex wrap is no wrap

otherwise there's rap reverse

now they're in reverse order

let's use flex wrap now Flex wrap is

used along with another property named

align content

align content

if I were to set align content to be

Flex

start

all of that space between the first row

and the second is now gone

then there's Flex end

Center

space evenly

then space between

use any combination of properties that

I've demonstrated

let's keep Flex wrap as wrap but I'll

use flex start

you can also add a gap between the rows

and the columns between each of these

elements

let's set a column Gap

column Dash Gap to be one em

that adds a gap between each of the

columns for the rows that would be row

Gap

I'll set that to be 1em you can also use

pixels as well

so here's 2 em

3

let's delete our Gap properties

all right let's also delete the extra

four boxes that we have

we're also going to get rid of the flex

wrapped property

as well as align content

there's also the Align self property

that can be applied to single elements

so with box one I will set a line self

to be start that's the default

this element will be aligned at the top

of our container

if I were to change line self to be

Center this single element is aligned in

the center of my container on the cross

axis

then we have end that will align at the

bottom

the Align self property can be applied

to any of these elements let's do that

with number two

line Dash self

at the start there is no change

Center

end

okay let's delete the Align self

property

we can use order to change the order of

these elements

with box one I will set the order to be

one that will place number one at the

end

negative one would be the beginning

which it normally is already

with box 2 I'll set the order to be one

that will place two at the end but if I

set it to be negative one it's now at

the beginning

all right everybody so that is a quick

introduction to flexbox there is a lot

to talk about and that is all the time

that I have for this topic and well

that's an introduction to flexbox in CSS