How to put a div in the center using Flexbox

Hello, My name is Nima Owji. Today, I want to show you "How to put a div in the center of the page using Flexbox". Let's start!

Creating The Files

First of all, we should create our files.

index.html
styles.css

We will write our styles in "styles.css".

Writing HTML Codes

OK, now, we should write our HTML codes:

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>Centered Div</title>
    <link rel="stylesheet" href="styles.css">
  </head>
  <body>
    <div class="container">
      
    </div>
  </body>
</html>

As you can see here, I linked "styles.css" as a stylesheet and I also created a

div

in the body. That

div

has a "container" class, we will use this class to add some styles to it!

After this, we don't see anything because our

div

is empty!

Writing CSS Styles

In "styles.css" we should make

body

and

html

tags fullscreen. We will do it by changing the

height

to "100vh".

html, body
{
  height: 100vh;
}

They are fullscreen now! After that, we should add a background-color to the

container div

to make it visible. We should also add

height

and

width

to that

div

.container
{
  background-color: #efefef;
  width: 70vw;
  height: 78vh;
  border-radius: 5px;
}

I also added a

border-radius

to make it more beautiful!

Now, you should see something like this:

We can see this

div

but it's not in the center yet!

Putting the

Div

in the Center

For that, first, we should select

body

and

html

tags and set their

display

flex

html, body
{
  height: 100vh;
  display: flex;
}

After that, we should use

justify-content

to put that

div

in the center horizontally!

html, body
{
  height: 100vh;
  display: flex;
  justify-content: center;
}

Now, our page looks like this:

It's horizontally in the center but we should put it in the center vertically too. What should we do? We will use

align-items

for that!

html, body
{
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

It's now finished and it's in the center of the page!

You can do it in many other ways but it's one of the easiest!

You can also add more styles like
box-shadow
to the container div to make it more beautiful!

Finished!

Thanks a lot for your reading. If you liked this, please tweet it and mention me too! If you had a question, please don't hesitate to contact me on Twitter.