Eliane  Blanda

Eliane Blanda

1622078981

CSS Flexbox | CSS justify-content Property Explained

CSS Flexbox justify-content

In this video you’ll learn CSS Flexbox justify-content property under one minute. For better view use YouTube mobile app.


CSS justify-content Property

Example

Align the flex items at the center of the container:

div {
  display: flex;
  justify-content: center;
}

Definition and Usage

The justify-content property aligns the flexible container's items when the items do not use all available space on the main-axis (horizontally).

Default value:flex-start
Inherited:no
Animatable:no. Read about animatable
Version:CSS3
JavaScript syntax:object.style.justifyContent="space-between"

CSS Syntax

justify-content: flex-start|flex-end|center|space-between|space-around|space-evenly|initial|inherit;

Property Values

ValueDescriptionPlay it
flex-startDefault value. Items are positioned at the beginning of the container

Demo ❯

flex-endItems are positioned at the end of the container

Demo ❯

centerItems are positioned in the center of the container

Demo ❯

space-betweenItems will have space between them

Demo ❯

space-aroundItems will have space before, between, and after them

Demo ❯

space-evenlyItems will have equal space around them

Demo ❯

initialSets this property to its default value. Read about initial 
inheritInherits this property from its parent element. Read about inherit 

More Examples

Example

Align the flex items at the beginning of the container (this is default):

div {
  display: flex;
  justify-content: flex-start;
}

Example

Align the flex items at the end of the container:

div {
  display: flex;
  justify-content: flex-end;
}

Example

Display the flex items with space between the lines:

div {
  display: flex;
  justify-content: space-between;
}

Example

Display the flex items with space before, between, and after the lines:

div {
  display: flex;
  justify-content: space-around;
}

CSS justify-content

The CSS justify-content property defines how the browser distributes space between and around content items along the main-axis of a flex container, and the inline axis of a grid container.

The interactive example below demonstrates some of the values using Grid Layout.

The alignment is done after the lengths and auto margins are applied, meaning that, if in a Flexbox layout there is at least one flexible element, with flex-grow different from 0, it will have no effect as there won't be any available space.

Syntax

/* Positional alignment */
justify-content: center;     /* Pack items around the center */
justify-content: start;      /* Pack items from the start */
justify-content: end;        /* Pack items from the end */
justify-content: flex-start; /* Pack flex items from the start */
justify-content: flex-end;   /* Pack flex items from the end */
justify-content: left;       /* Pack items from the left */
justify-content: right;      /* Pack items from the right */

/* Baseline alignment */
/* justify-content does not take baseline values */

/* Normal alignment */
justify-content: normal;

/* Distributed alignment */
justify-content: space-between; /* Distribute items evenly
                                   The first item is flush with the start,
                                   the last is flush with the end */
justify-content: space-around;  /* Distribute items evenly
                                   Items have a half-size space
                                   on either end */
justify-content: space-evenly;  /* Distribute items evenly
                                   Items have equal space around them */
justify-content: stretch;       /* Distribute items evenly
                                   Stretch 'auto'-sized items to fit
                                   the container */

/* Overflow alignment */
justify-content: safe center;
justify-content: unsafe center;

/* Global values */
justify-content: inherit;
justify-content: initial;
justify-content: revert;
justify-content: revert-layer;
justify-content: unset;

Values

start

The items are packed flush to each other toward the start edge of the alignment container in the main axis.

end

The items are packed flush to each other toward the end edge of the alignment container in the main axis.

flex-start

The items are packed flush to each other toward the edge of the alignment container depending on the flex container's main-start side. This only applies to flex layout items. For items that are not children of a flex container, this value is treated like start.

flex-end

The items are packed flush to each other toward the edge of the alignment container depending on the flex container's main-end side. This only applies to flex layout items. For items that are not children of a flex container, this value is treated like end.

center

The items are packed flush to each other toward the center of the alignment container along the main axis.

left

The items are packed flush to each other toward the left edge of the alignment container. If the property's axis is not parallel with the inline axis, this value behaves like start.

right

The items are packed flush to each other toward the right edge of the alignment container in the appropriate axis. If the property's axis is not parallel with the inline axis, this value behaves like start.

normal

The items are packed in their default position as if no justify-content value was set. This value behaves as stretch in grid and flex containers.

baseline first baseline last baseline

Specifies participation in first- or last-baseline alignment: aligns the alignment baseline of the box's first or last baseline set with the corresponding baseline in the shared first or last baseline set of all the boxes in its baseline-sharing group. The fallback alignment for first baseline is start, the one for last baseline is end.

space-between

The items are evenly distributed within the alignment container along the main axis. The spacing between each pair of adjacent items is the same. The first item is flush with the main-start edge, and the last item is flush with the main-end edge.

space-around

The items are evenly distributed within the alignment container along the main axis. The spacing between each pair of adjacent items is the same. The empty space before the first and after the last item equals half of the space between each pair of adjacent items.

space-evenly

The items are evenly distributed within the alignment container along the main axis. The spacing between each pair of adjacent items, the main-start edge and the first item, and the main-end edge and the last item, are all exactly the same.

stretch

If the combined size of the items along the main axis is less than the size of the alignment container, any auto-sized items have their size increased equally (not proportionally), while still respecting the constraints imposed by max-height/max-width (or equivalent functionality), so that the combined size exactly fills the alignment container along the main axis.

Note: stretch is not supported by flexible boxes (flexbox).

safe

Used alongside an alignment keyword. If the chosen keyword means that the item overflows the alignment container causing data loss, the item is instead aligned as if the alignment mode were start.

unsafe

Used alongside an alignment keyword. Regardless of the relative sizes of the item and alignment container, and regardless of whether overflow which causes data loss might happen, the given alignment value is honored.

Formal definition

Initial valuenormal
Applies toflex containers
Inheritedno
Computed valueas specified
Animation typediscrete

Formal syntax

justify-content = 
  normal                                              |
  <content-distribution>                              |
  <overflow-position>? [ <content-position> | left | right ]  

<content-distribution> = 
  space-between  |
  space-around   |
  space-evenly   |
  stretch        

<overflow-position> = 
  unsafe  |
  safe    

<content-position> = 
  center      |
  start       |
  end         |
  flex-start  |
  flex-end    

Examples

Setting flex item distribution

CSS

#container {
  display: flex;
  justify-content: space-between; /* Can be changed in the live sample */
}

#container > div {
  width: 100px;
  height: 100px;
  background: linear-gradient(-45deg, #788cff, #b4c8ff);
}

#css #programming 

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CSS Flexbox | CSS justify-content Property Explained

CSS Flexbox: What I learned from Flexbox Zombies

I started playing an educational game called Flexbox Zombies, which has been teaching me the fundamentals of flexbox in a fun way. In the game, you fight zombies by using features of flexbox to aim your crossbow at the zombies.

MDN docs explain flexbox as:

a one-dimensional layout method for laying out items in rows or columns. Items flex to fill additional space and shrink to fit into smaller spaces.

The Flexbox Zombies game teaches flexbox through a story, with each lesson building on the previous, thus reinforcing the fundamentals of flexbox in a fun and effective way.

#flexbox #css #css flexbox #flexbox zombies

CSS Flex Box: A Flexible Way To Layout

Every element of HTML is a rectangular box. Every Box has a defined height and width. This way you can increase or decrease its size. CSS is used to style HTML elements so that they look nice and decorated. CSS treats every element in the view of its box model. So every element has padding, margin, and border too.

You can learn more about CSS BOX Model here.

Box layout means to position a box on the page. So you may like to center an element horizontally or vertically or you may want to move the element to any other position on the page. Laying out your page is the most important task which determines the overall look of the page.

CSS has got many ways to align a box. You could choose floats, position property or you could try aligning it using margin and padding. But it’s not always so easy to align an element as you wish to. Developers have always been having difficulties to center an element horizontally or vertically. If you try using floats, you will see that it requires more work and gives you extra lines of code to position the element. So what’s the way out?

Here comes the modern CSS Flex Box technique. After using Flex Box for the first time you will forget the difficulties you have been facing with your layout. You will make your layout with fewer lines of code and very quickly.

Now after having Flex Box in your hand you don’t need to worry about every single element in your container. What you need is just add one or two lines of code and there you go.

What Are Some Of The Most Popular Uses Of Flex Box?

You can use Flex Box Almost anywhere on your website to align your content, but I found it more useful to apply it on certain parts of my page than others.

1: Navigation bar

The Navigation menu is mostly a horizontal or vertical bar on top or side of the page with links to other parts of the page. You can create a container for it and apply Flex Box to it so that you can move it’s items wherever it’s suitable for your page layout.

2: Footer

Footer of a website mostly includes contact details, logo, and some links to other parts of the site. You can align your footer content with the help of Flex Box too.

3: Horizontal Alignment

You can align your container’s elements on the horizontal line wherever you like and can add space in them.

4: Vertical Alignment

It often requires to position elements vertically, so there is a very easy way to achieve it with Flex Box. You just need to add one line and it’s already done.

4: Re-Ordering Elements

Flex Box has a function that allows you to rearrange the order of your elements in a container. You can change the order of any element you like.

#web-development #technology #css3 #flexbox #css #html-css #learning-css #learn-flexbox-css

Queenie  Davis

Queenie Davis

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What is CSS flex-flow and justify-content?

Flex-flow is the shorthand for the flex-direction and flex-wrap. We already talked about flex-wrap before.

For the flex-direction, if the direction is row, the items are placed in a row. If row-reverse, the items are also placed in a row but in reverse order.

row and row-reverse

The items are placed in column if the flex-direction is column, the items are placed in reverse order if is column-reverse.

column and column-reverse

Row and column

We added the color and changed the text to number for the buttons. We also added the height for the “ul” element. This is because we need to demonstrate the flex-direction column.

#css #flex-flow #flexbox #css3 #justify-content #flex-flow

Aisu  Joesph

Aisu Joesph

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CSS is seen as an impediment in web development for many of us. Most of the time it looks like even when you follow the rules and everything seems clear, it still doesn’t work the way you want it to.

Therefore, the purpose of this article is to make some features of CSS much easier to understand.

The thing I want to address now is the alignment of the elements.

Without further ado, here are some of the most common scenarios one might encounter when it comes to this topic and how they can be approached.

#css-center #css-position #css-flexbox #css-center-image-in-a-div #css

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