Learn CSS flexbox in 10 minutes! 💪
Summary
TLDRThis 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
📐 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.
🔄 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.
Mindmap
Keywords
💡Flexbox
💡Container
💡Box
💡Flex Direction
💡Justify Content
💡Align Items
💡Border Radius
💡Flex Wrap
💡Align Content
💡Gap
💡Align Self
💡Order
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
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