I have a div with 5 child divs. There is no content, it's just there to visually display a percentage. I have set a width and height on the parent and I want to find the easiest way to make the children equally fill that width. I can do this by adding flex-grow to each child but ideally I'd love to be able to control that from the parent.
NB: Code is using tailwindcss
<div class="flex w-64 h-2">
<div class="flex-grow mr-1 rounded-l-lg bg-blue-dark"></div>
<div class="flex-grow mr-1 bg-blue-dark"></div>
<div class="flex-grow mr-1 bg-blue-dark"></div>
<div class="flex-grow mr-1 bg-blue-dark"></div>
<div class="flex-grow rounded-r-lg bg-gray-lighter"></div>
</div>
You have "flexbox" in title but you did not mentioned in question that you actually you are forced to use flexboxes, just need to achieve equal divs.
So the best approach will be using grid instead of flex, because it is just designed for that.
<link href="https://unpkg.com/tailwindcss#^1.0/dist/tailwind.min.css" rel="stylesheet"/>
<div class="grid grid-flow-col w-64 h-2">
<div class="bg-blue-500"></div>
<div class="bg-red-500"></div>
<div class="bg-green-500"></div>
<div class="bg-orange-500"></div>
<div class="bg-gray-500"></div>
</div>
This question already has answers here:
How can I center elements horizontally or vertically with Twitter Bootstrap?
(12 answers)
Bootstrap Center Vertical and Horizontal Alignment
(17 answers)
Closed last year.
I am trying to center my Container in the middle of the page using Bootstrap 4. I have been unsuccessful thus far. Any help would be appreciated.
I have built it at Codepen.io so you guys can play with it and let me know what works as I am about out of ideas...
var currentAuthor = "";
var currentQuote = "";
function randomQuote() {
$.ajax({
url: "https://api.forismatic.com/api/1.0/?",
dataType: "jsonp",
data: "method=getQuote&format=jsonp&lang=en&jsonp=?",
success: function( response ) {
$("#quote-content").html('<h2 id="quote-content" class="display-5"><i class="fa fa-quote-left" aria-hidden="true"> ' + response.quoteText + ' <i class="fa fa-quote-right" aria-hidden="true"></i></h2>');
$("#quote-author").html('<p id="quote-author" class="lead"><em>' + response.quoteAuthor + '</em></p>');
currentAuthor = response.quoteAuthor;
currentQuote = response.quoteText
}
});
}
function openURL(url){
window.open(url,'Share', 'width=550, height=400, toolbar=0, scrollbars=1 ,location=0 ,statusbar=0,menubar=0, resizable=0');
}
function tweetQuote(){
openURL('https://twitter.com/intent/tweet?hashtags=quotes,freecodecamp&related=freecodecamp&text=' + encodeURIComponent('"' + currentQuote + '" - ' + currentAuthor));
}
$(document).ready(function () {
randomQuote();
$("#get-another-quote-button").click(function(){
randomQuote();
});
$('#tweet').on('click', function() {
tweetQuote();
});
});
html, body {
background-image: url("https://www.mylinea.com/wp-content/uploads/beautiful-trees-stock-photo-055.jpg");
background-color: #17234E;
margin-bottom: 0;
min-height: 30%;
background-repeat: no-repeat;
background-position: center;
-webkit-background-size: cover;
background-size: cover;
}
.btn-new-quote {
color: #0C0C0D;
background-color: transparent;
border-color: #414147;
}
.btn-new-quote:hover {
color: #0C0C0D;
background-color: #9A989E;
border-color: #0C0C0D;
}
#tweet {
color: RGB(100, 100, 100);
}
#tweet:hover {
color: RGB(50, 50, 50);
}
.jumbotron {
position: relative;
top: 50%;
transform: translateY(-50%);
opacity: .85;
border-color: RGB(50, 50, 50);
padding-bottom: 8px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
<div class="container">
<div class="row justify-content-center align-self-center">
<div class="col-sm-6">
<div class="jumbotron vertical-center text-center">
<h2 id="quote-content" class="display-5"><i class="fa fa-quote-left" aria-hidden="true"></i><i class="fa fa-quote-right" aria-hidden="true"></i></h2>
<p id="quote-author" class="lead"><em></em></p>
<hr class="my-2">
<div class="row align-items-center justify-content-between">
<div class="col-sm-1-4 text-left">
<a id="tweet" href="#">
<h2 class="display-4"><i class="fa fa-twitter" aria-hidden="true"></i></h2>
</a>
</div>
<div class="col-sm-1-4 text-right">
<button id="get-another-quote-button" type="button" class="btn btn-outline-secondary btn-new-quote">Don't Quote Me on This...</button>
</div>
</div>
</div>
</div>
</div>
</div>
Important! Vertical center is relative to the height of the parent
If the parent of the element you're trying to center has no defined
height, none of the vertical centering solutions will work!
Now, onto vertical centering...
Bootstrap 5 (Updated 2021)
Bootstrap 5 is still flexbox based so vertical centering works the same way as Bootstrap 4. For example, align-items-center, justify-content-center or auto margins can used on the flexbox parent (row or d-flex).
use align-items-center on a flexbox row parent (row or d-flex)
use justify-content-center on a flexbox column parent (d-flex flex-column)
use my-auto on a flexbox parent
Vertical Center in Bootstrap 5
Bootstrap 4
You can use the new flexbox & size utilities to make the container full-height and display: flex. These options don't require extra CSS (except that the height of the container (ie:html,body) must be 100%).
Option 1 align-self-center on flexbox child
<div class="container d-flex h-100">
<div class="row justify-content-center align-self-center">
I'm vertically centered
</div>
</div>
https://codeply.com/go/fFqaDe5Oey
Option 2 align-items-center on flexbox parent (.row is display:flex; flex-direction:row)
<div class="container h-100">
<div class="row align-items-center h-100">
<div class="col-6 mx-auto">
<div class="jumbotron">
I'm vertically centered
</div>
</div>
</div>
</div>
https://codeply.com/go/BumdFnmLuk
Option 3 justify-content-center on flexbox parent (.card is display:flex;flex-direction:column)
<div class="container h-100">
<div class="row align-items-center h-100">
<div class="col-6 mx-auto">
<div class="card h-100 border-primary justify-content-center">
<div>
...card content...
</div>
</div>
</div>
</div>
</div>
https://codeply.com/go/3gySSEe7nd
More on Bootstrap 4 Vertical Centering
Now that Bootstrap 4 offers flexbox and other utilities, there are many approaches to vertical
alignment. http://www.codeply.com/go/WG15ZWC4lf
1 - Vertical Center Using Auto Margins:
Another way to vertically center is to use my-auto. This will center the element within it's container. For example, h-100 makes the row full height, and my-auto will vertically center the col-sm-12 column.
<div class="row h-100">
<div class="col-sm-12 my-auto">
<div class="card card-block w-25">Card</div>
</div>
</div>
Vertical Center Using Auto Margins Demo
my-auto represents margins on the vertical y-axis and is equivalent to:
margin-top: auto;
margin-bottom: auto;
2 - Vertical Center with Flexbox:
Since Bootstrap 4 .row is now display:flex you can simply use align-self-center on any column to vertically center it...
<div class="row">
<div class="col-6 align-self-center">
<div class="card card-block">
Center
</div>
</div>
<div class="col-6">
<div class="card card-inverse card-danger">
Taller
</div>
</div>
</div>
or, use align-items-center on the entire .row to vertically center align all col-* in the row...
<div class="row align-items-center">
<div class="col-6">
<div class="card card-block">
Center
</div>
</div>
<div class="col-6">
<div class="card card-inverse card-danger">
Taller
</div>
</div>
</div>
Vertical Center Different Height Columns Demo
See this Q/A to center, but maintain equal height
3 - Vertical Center Using Display Utils:
Bootstrap 4 has display utils that can be used for display:table, display:table-cell, display:inline, etc.. These can be used with the vertical alignment utils to align inline, inline-block or table cell elements.
<div class="row h-50">
<div class="col-sm-12 h-100 d-table">
<div class="card card-block d-table-cell align-middle">
I am centered vertically
</div>
</div>
</div>
Vertical Center Using Display Utils Demo
More examples
Vertical center image in <div>
Vertical center .row in .container
Vertical center and bottom in <div>
Vertical center child inside parent
Vertical center full screen jumbotron
Important! Did I mention height?
Remember vertical centering is relative to the height of the parent element. If you want to center on the entire page, in most cases, this should be your CSS...
body,html {
height: 100%;
}
Or use min-height: 100vh (min-vh-100 in Bootstrap 4.1+) on the parent/container. If you want to center a child element inside the parent. The parent must have a defined height.
Also see:
Vertical alignment in bootstrap 4
Bootstrap Center Vertical and Horizontal Alignment
you can vertically align your container by making the parent container flex and adding align-items:center:
body {
display:flex;
align-items:center;
}
Updated Pen
Using bootstrap version 5 or later, use the code below to center the content horizontally and vertically.
<div class="vh-100 d-flex justify-content-center align-items-center">
<h1>Centered horizontally and vertically!</h1>
</div>
Following bootstrap 4 classes helped me solve this
<div class="col text-center justify-content-center align-self-center">
<img width=3rem src=".." alt="...">
</div>
Because none of the above worked for me, I am adding another answer.
Goal: To vertically and horizontally align a div on a page using bootstrap 4 flexbox classes.
Step 1: Set your outermost div to a height of 100vh. This sets the height to 100% of the Veiwport Height. If you don't do this, nothing else will work. Setting it to a height of 100% is only relative to the parent, so if the parent is not the full height of the viewport, nothing will work. In the example below, I set the Body to 100vh.
Step 2: Set the container div to be the flexbox container with the d-flex class.
Step 3: Center div horizontally with the justify-content-center class.
Step 4: Center div vertically with the align-items-center
Step 5: Run page, view your vertically and horizontally centered div.
Note that there is no special class that needs to be set on the centered div itself (the child div)
<body style="background-color:#f2f2f2; height:100vh;">
<div class="h-100 d-flex justify-content-center align-items-center">
<div style="height:600px; background-color:white; width:600px;">
</div>
</div>
</body>
I did it this way with Bootstrap 4.3.1:
<div class="d-flex vh-100">
<div class="d-flex w-100 justify-content-center align-self-center">
I'm in the middle
</div>
</div>
.jumbotron {
position: relative;
top: 50%;
transform: translateY(-50%);
}
<div class="row">
<div class="col-md-6">
<img src="/assets/images/ebook2.png" alt="" class="img-fluid">
</div>
<div class="col-md-6 my-auto">
<h3>Heading</h3>
<p>Some text.</p>
</div>
</div>
This line is where the magic happens <div class="col-md-6 my-auto">, the my-auto will center the content of the column. This works great with situations like the code sample above where you might have a variable sized image and need to have the text in the column to the right line up with it.
I've tried all the answers herefrom, but found out here is the difference between h-100 and vh-100
Here is my solution:
<div className='container vh-100 d-flex align-items-center col justify-content-center'>
<div className="">
...
</div>
</div >
<div class="col-lg-5 col-sm-5 offset-1 d-flex">
<div class="offer-txt justify-content-center align-self-center">
<span class="inner-title">Our Offer</span>
<h2 class="section-title">Today’s Special </h2>
<p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly.</p>
</div>
</div>
In Bootstrap 4 (beta), use align-middle. Refer to Bootstrap 4 Documentation on Vertical alignment:
Change the alignment of elements with the vertical-alignment
utilities. Please note that vertical-align only affects inline,
inline-block, inline-table, and table cell elements.
Choose from .align-baseline, .align-top, .align-middle, .align-bottom,
.align-text-bottom, and .align-text-top as needed.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="row align-items-center justify-content-center" style="height:100vh;">
<div>Center Div Here</div>
</div>
</div>
</body>
</html>
Vertical align Using this bootstrap 4 classes:
Method1:
parent: d-table
AND
child: d-table-cell & align-middle & text-center
eg:
<div class="tab-icon-holder d-table bg-light">
<div class="d-table-cell align-middle text-center">
<img src="assets/images/devices/Xl.png" height="30rem">
</div>
</div>
and if you want parent be circle:
<div class="tab-icon-holder d-table bg-light rounded-circle">
<div class="d-table-cell align-middle text-center">
<img src="assets/images/devices/Xl.png" height="30rem">
</div>
</div>
which two custom css classes are as follow:
.tab-icon-holder {
width: 3.5rem;
height: 3.5rem;
}
.rounded-circle {
border-radius: 50% !important
}
Final usage can be like for example:
<div class="col-md-5 mx-auto text-center">
<div class="d-flex justify-content-around">
<div class="tab-icon-holder d-table bg-light rounded-circle">
<div class="d-table-cell align-middle text-center">
<img src="assets/images/devices/Xl.png" height="30rem">
</div>
</div>
<div class="tab-icon-holder d-table bg-light rounded-circle">
<div class="d-table-cell align-middle text-center">
<img src="assets/images/devices/Lg.png" height="30rem">
</div>
</div>
...
</div>
</div>
Method2:
You can use following:
parent: h-100 d-table mx-auto
AND
child: d-table-cell align-middle
Method3:
You can use following:
parent: d-flext align-items-center
also if you want content be center horisontally too:
parent: d-flext align-items-center justify-content-center
bootstrap 5 and blazor web assembly:
<div class="d-flex align-items-center justify-content-center min" style="height: 50vh">
<button class="btn btn-outline-success mx-2">Register</button>
<button class="btn btn-outline-primary mx-2" style="width:123.44px">Login</button></div>
/*You have to add height 100vh */
Center
use .my-auto (bootsrap4) css class on yor div
Place your content within a flexbox container that is 100% high i.e h-100. Then justify the content centrally by using justify-content-center class.
<section class="container h-100 d-flex justify-content-center">
<div class="jumbotron my-auto">
<h1 class="display-3">Hello, Malawi!</h1>
</div>
</section>
in Bootstrap 5 we can do it easily. Below is an example to align card. We just have to set the card width, then the rest setting are using bootstrap 5 class.
<div class="container d-flex vh-100">
<div class="row mx-auto">
<div class="col align-self-center p-4">
<div class="card rounded-3 shadow-sm p-3" style="width:400px">
<div class="card-body">
<h1>I'am centered vertically and horizontally</h1>
</div>
</div>
</div>
</div>
</div>
For all Bootstrap versions 2, 3, 4 and 5 with only two custom classes suitable with any height and width.
.d_tbl{
display:table;
width:100%;
height:200px;
}
.d_tblCel{
vertical-align: middle;
display: table-cell;
text-align: center;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="d_tbl" style="background-color:antiquewhite">
<div class="d_tblCel">
<h3>Centered horizontally and vertically</h3>
<p>for all bootstrap versions with only two custom classes</p>
</div>
</div>
</div>
</body>
</html>
In Bootstrap 4.1.3:
This worked for me when I was trying to center a bootstrap badge inside of a container > row > column next to a h1 title.
What did work was some simple css:
.my-valign-center {
vertical-align: 50%;
}
or
<span class="badge badge-pill" style="vertical-align: 50%;">My Badge</span>
I am starting out with bootstrap here and I want my page to limit itself to 1170px which is the container class standard, but I want the color to continue across the full width of the page.
The only idea I can think of is:
<div class="container-fluid BGtoExtendWholePage headerBG">
<div class="container">
<div class="row">
<div class="col-12">
Main Body of Page - Header
</div>
</div>
</div>
</div>
<div class="container-fluid BGtoExtendWholePage ContentBG">
<div class="container">
<div class="row">
<div class="col-12">
Main Body of Page - Main Content
</div>
</div>
</div>
</div>
There's big arguments against nesting containers in Bootstrap (cue the person to post a link to the bit of documentation saying not to) but I found this to work.
You nest a container within a container-fluid - note the use of p-0 to remove the padding from the inner container.
<div class="container-fluid bg-red mb-3">
<div class="row">
<div class="container p-0 mt-6 mb-6">
...
</div>
</div>
</div>
If you want a full-width background color that is the same in your whole project then you could simply add a <body> tag at the beginning and end of your code (if it isn't already there) and add the following to your CSS
body {
background-color: color-choise;
}
Fill in the color-choise with the color you want it to be.
In the doc and in the issues of Bootstrap v4 (here), I can't see any plan on supporting flex-grow, something with a syntax like this for example:
<div class="d-flex">
<div class="flex-grow">
I use all the space left
</div>
<div>
I am a small text on the right
</div>
</div>
Here a sample of the layout I'd like to create:
The export button is always on the right, and the navigation button takes all the space left and therefore looks clean.
Is it possible to build such a layout already? Maybe it is not advised? Of course, there are workarounds using CSS, but I am looking for a clean solution, ideally using Bootstrap class names only to guarantee consistency.
use .col for a simple flex-grow: 1;. It's described here https://v4-alpha.getbootstrap.com/layout/grid/#variable-width-content
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet" />
<div class="container">
<div class="row">
<div class="col">
I use all the space left
</div>
<div class="col-sm col-sm-auto">
I am a small text on the right
</div>
</div>
</div>
For anyone comming here from a google search (like me).
Since Bootstrap v 4.1 there are flex-grow and flex-shrink utilities, as the documentation says you can use them like this:
.flex-{grow|shrink}-0
.flex-{grow|shrink}-1
.flex-sm-{grow|shrink}-0
.flex-sm-{grow|shrink}-1
Here is a little example
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet" />
<div class="d-flex flex-row">
<div class="d-flex flex-grow-1 text-white justify-content-center bg-danger">
Grow 1
</div>
<div class="d-flex flex-grow-0 text-white justify-content-center bg-success">
Grow 0
</div>
<div class="d-flex flex-grow-1 text-white justify-content-center bg-danger">
Grow 1
</div>
</div>
I created a class for this, I checked the Bootstrap docs and found nothing about it.
.flex-2 { flex-grow: 2 }
col-auto takes the remaining space but if you have more than one row, so space won't be distributed equally. That's why flex-grow does the trick.
I have seen a lot posts about this, I know it's simple but I cannot get my example to work and I would like to understand why as I still did not grasp the concept of positioning in CSS.
I am using simple bootstrap in my App. I have a container with row and col-md-6. My code looks like this.
<section id="automat" class="box bg-light-grey">
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<img src="images/iPod.png" class="scaleImage"/>
</div>
</div>
</div>
</section>
And my custom css style for image looks like this (depending on screen size I will control the size of img element).
.scaleImage {
width:300px;
height:auto;
position:relative;
margin:0 auto;
}
As you can see, I have tried to set the exact width of my element, with position:relative and margin:0 auto. According to the other posts, this is supposed to be enough to center my element inside my container, but it's not. It is still locked on the very left side of my col-md-6 container.
My question is following: Why my solution is not working and how do I need to change my code to get this to work?
Is this working?
<div class="container">
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-6 text-center">
<img src="images/iPod.png" class="scaleImage" style="width:100%;height:100%"/>
</div>
<div class="col-md-3"></div>
</div>
</div>
You can try like this,
section{
background: gray;
}
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<section id="automat" class="box bg-light-grey">
<div class="container text-center">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<img src="https://www.sfu.ca/content/sfu/publicsquare/_jcr_content/below-nav/parsys/image.img.jpg/1406566003083.jpg" class="scaleImage" />
</div>
</div>
</div>
</section>
You can use bootstrap class 'text-center' to center. So, you do not need to use margin:0 auto.
Here you have defined an offset too. You do not need offset to center a div.
.scaleImage {
width:300px;
height:auto;
position:relative;
}
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<section id="automat" class="box bg-light-grey">
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3 text-center">
<img src="https://d3nevzfk7ii3be.cloudfront.net/igi/tcbxa1Eb6YMETIW2.large" class="scaleImage"/>
</div>
</div>
</div>
</section>
margin: 0 auto would not work because image is inline-block element (look: Why doesn't margin:auto center an image?)
To align image do text-align: center on parent div or <div class="container text-center">.
try to add one more class, text-center to col-md-6. It will center align the content.
position:relative;
float:none;
width:100%;
max-width:300px;
margin:auto;
DISPLAY:BLOCK
so to center your element in the middle you need this combination of css properties