How do I center a div of one column size within the container (12 columns) in Twitter Bootstrap 3?
.centered {
background-color: red;
}
_x000D_
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<body class="container">
<div class="col-lg-1 col-offset-6 centered">
<img data-src="holder.js/100x100" alt="" />
</div>
</body>
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I want a div
, with a class .centered
to be centered within the container. I may use a row if there are multiple div
s, but for now I just want a div
with the size of one column centered within the container (12 columns).
I am also not sure the above approach is good enough as the intention is not to offset the div
by half. I do not need free spaces outside the div
and the contents of the div
shrink in proportion. I want to empty space outside the div to be evenly distributed (shrink till the container width is equal to one column).
This question is related to
css
twitter-bootstrap
twitter-bootstrap-3
centering
This is not my code, but it works perfectly (tested on Bootstrap 3) and I don't have to mess around with col-offset.
Demo:
/* centered columns styles */_x000D_
_x000D_
.col-centered {_x000D_
display: inline-block;_x000D_
float: none;_x000D_
/* inline-block space fix */_x000D_
margin-right: -4px;_x000D_
background-color: #ccc;_x000D_
border: 1px solid #ddd;_x000D_
}
_x000D_
<div class="container">_x000D_
<div class="row text-center">_x000D_
<div class="col-xs-6 col-centered">Column 6</div>_x000D_
<div class="col-xs-6 col-centered">Column 6</div>_x000D_
<div class="col-xs-3 col-centered">Column 3</div>_x000D_
<div class="col-xs-3 col-centered">Column 3</div>_x000D_
<div class="col-xs-3 col-centered">Column 3</div>_x000D_
</div>_x000D_
</div>
_x000D_
With bootstrap 4 you can simply try justify-content-md-center
as it is mentioned here
<div class="container">
<div class="row justify-content-md-center">
<div class="col col-lg-2">
1 of 3
</div>
<div class="col-md-auto">
Variable width content
</div>
<div class="col col-lg-2">
3 of 3
</div>
</div>
<div class="row">
<div class="col">
1 of 3
</div>
<div class="col-md-auto">
Variable width content
</div>
<div class="col col-lg-2">
3 of 3
</div>
</div>
</div>
For those looking to center the column elements on the screen when you don't have the exact number to fill your grid, I have written a little piece of JavaScript to return the class names:
function colCalculator(totalNumberOfElements, elementsPerRow, screenSize) {
var arrayFill = function (size, content) {
return Array.apply(null, Array(size)).map(String.prototype.valueOf, content);
};
var elementSize = parseInt(12 / elementsPerRow, 10);
var normalClassName = 'col-' + screenSize + '-' + elementSize;
var numberOfFittingElements = parseInt(totalNumberOfElements / elementsPerRow, 10) * elementsPerRow;
var numberOfRemainingElements = totalNumberOfElements - numberOfFittingElements;
var ret = arrayFill(numberOfFittingElements, normalClassName);
var remainingSize = 12 - numberOfRemainingElements * elementSize;
var remainingLeftSize = parseInt(remainingSize / 2, 10);
return ret.concat(arrayFill(numberOfRemainingElements, normalClassName + ' col-' + screenSize + '-push-' + remainingLeftSize));
}
If you have 5 elements and you want to have 3 per row on a md
screen, you do this:
colCalculator(5, 3, 'md')
>> ["col-md-4", "col-md-4", "col-md-4", "col-md-4 col-md-push-2", "col-md-4 col-md-push-2"]
Keep in mind, the second argument must be dividable by 12.
To center more than one column in a Bootstrap row - and the number of cols are odd, simply add this css
class to all the columns in that row:
.many-cols-centered { // To horizontally center bootstrap odd cols, eg col-lg-9, col-md-3, works well in lg
display:inline-block;
float:none;
}
So in your HTML you have something like:
<div class="row text-center"> <!-- text-center centers all text in that row -->
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 many-cols-centered">
<img src='assets/image1.jpg'>
<h3>You See</h3>
<p>I love coding.</p>
</div>
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 many-cols-centered">
<img src='assets/image2.jpg'>
<h3>You See</h3>
<p>I love coding.</p>
</div>
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 many-cols-centered">
<img src='assets/image3.jpg'>
<h3>You See</h3>
<p>I love coding.</p>
</div>
</div>
This works. A hackish way probably, but it works nicely. It was tested for responsive (Y).
.centered {
background-color: teal;
text-align: center;
}
Bootstrap version 3 has a .text-center class.
Just add this class:
text-center
It will simply load this style:
.text-center {
text-align: center;
}
Example:
<div class="container-fluid">
<div class="row text-center">
<div class="col-md-12">
Bootstrap 4 is coming....
</div>
</div>
</div>
This is probably not the best answer, but there is one more creative solution to this. As pointed out by koala_dev the column offsetting works only for even column sizes. However, by nesting rows you can achieve centering uneven columns as well.
To stick with the original question where you want to center a column of 1 inside a grid of 12.
For example:
<div class="container">
<div class="row">
<div class="col-md-offset-5 col-md-2">
<div class="row">
<div class="col-md-offset-3 col-md-6">
centered column with that has an "original width" of 1 col
</div>
</div>
</div>
</div>
</div>
See this fiddle, please note that you have to increase the size of the output window in order too see the result, otherwise the columns will wrap.
<div class="container">
<div class="row row-centered">
<div class="col-xs-6 col-centered">Column 6</div>
<div class="col-xs-6 col-centered">Column 6</div>
<div class="col-xs-3 col-centered">Column 3</div>
<div class="col-xs-3 col-centered">Column 3</div>
<div class="col-xs-3 col-centered">Column 3</div>
</div>
</div>
CSS
/* centered columns styles */
.row-centered {
text-align:center;
}
.col-centered {
display:inline-block;
float:none;
/* reset the text-align */
text-align:left;
/* inline-block space fix */
margin-right:-4px;
text-align: center;
background-color: #ccc;
border: 1px solid #ddd;
}
Simply add the following to your custom CSS file. Editing Bootstrap CSS files directly is not recommended and cancels your ability to use a CDN.
.center-block {
float: none !important
}
Why?
Bootstrap CSS (version 3.7 and lower) uses margin: 0 auto;, but it gets overridden by the float property of the size container.
PS:
After you add this class, don't forget to set classes by the right order.
<div class="col-md-6 center-block">Example</div>
Now Bootstrap 3.1.1 is working with .center-block
, and this helper class works with the column system.
Bootstrap 3 Helper Class Center.
Please check this jsfiddle DEMO:
<div class="container">
<div class="row">
<div class="center-block">row center-block</div>
</div>
<div class="row">
<div class="col-md-6 brd">
<div class="center-block">1 center-block</div>
</div>
<div class="col-md-6 brd">
<div class="center-block">2 center-block</div>
</div>
</div>
</div>
<div class="row">
<div class="col-xs-2 col-center-block">row col-xs-2 col-center-block</div>
</div>
Row column center using col-center-block
helper class.
.col-center-block {
float: none;
display: block;
margin: 0 auto;
/* margin-left: auto; margin-right: auto; */
}
Bootstrap 3 now has a built-in class for this .center-block
.center-block {
display: block;
margin-left: auto;
margin-right: auto;
}
If you are still using 2.X then just add this to your CSS.
Try this
<div class="row">
<div class="col-xs-2 col-xs-offset-5"></div>
</div>
You can use other col
as well like col-md-2
, etc.
Bootstrap 4 solution:
<div class="container">
<div class="row">
<div class="col align-self-center">
Column in the middle, variable width
</div>
</div>
</div>
You can use text-center
for the row and can make sure the internal divs have display:inline-block
(with not float
).
As:
<div class="container">
<div class="row text-center" style="background-color : black;">
<div class="redBlock">A red block</div>
<div class="whiteBlock">A white block</div>
<div class="yellowBlock">A yellow block</div>
</div>
</div>
And CSS:
.redBlock {
width: 100px;
height: 100px;
background-color: aqua;
display: inline-block
}
.whiteBlock {
width: 100px;
height: 100px;
background-color: white;
display: inline-block
}
.yellowBlock {
width: 100px;
height: 100px;
background-color: yellow;
display: inline-block
}
The fiddle: http://jsfiddle.net/DTcHh/3177/
Note if you are using Bootstrap 4, you can use .align-items-center
in your row
as Boostrap 4 now uses the flex system.
To center the col- we need to use the below code. cols are floater elements besides margin auto. We will also set it to float none,
<body class="container">
<div class="col-lg-1 col-md-4 centered">
<img data-src="holder.js/100x100" alt="" />
</div>
</body>
To center the above col-lg-1 with class of centered, we will write:
.centered {
float: none;
margin-left: auto;
margin-right: auto;
}
To center the content inside the div, use text-align:center
,
.centered {
text-align: center;
}
If you want to center it only on the desktop and larger screen, not on mobile, then use the following media query.
@media (min-width: 768px) {
.centered {
float: none;
margin-left: auto;
margin-right: auto;
}
}
And to center the div only on mobile version, use the below code.
@media (max-width: 768px) {
.centered {
float: none;
margin-left: auto;
margin-right: auto;
}
}
Just set your one column that displays content to col-xs-12 (mobile-first ;-) and configure the container only to control how wide you want your centred content to be, so:
.container {_x000D_
background-color: blue;_x000D_
}_x000D_
.centered {_x000D_
background-color: red;_x000D_
}
_x000D_
<body class="container col-xs-offset-3 col-xs-6">_x000D_
<div class="col-xs-12 centered">_x000D_
<img data-src="holder.js/100x100" alt="" />_x000D_
</div>_x000D_
</body>
_x000D_
<body class="container col-xs-offset-1 col-xs-10">_x000D_
<div class="col-xs-12 centered">_x000D_
<img data-src="holder.js/100x100" alt="" />_x000D_
</div>_x000D_
</body>
_x000D_
For a demo, see http://codepen.io/Kebten/pen/gpRNMe :-)
My approach to center columns is to use display: inline-block
for columns and text-align: center
for the container parent.
You just have to add the CSS class 'centered' to the row
.
<div class="container-fluid">
<div class="row centered">
<div class="col-sm-4 col-md-4">
Col 1
</div>
<div class="col-sm-4 col-md-4">
Col 2
</div>
<div class="col-sm-4 col-md-4">
Col 3
</div>
</div>
</div>
.centered {
text-align: center;
font-size: 0;
}
.centered > div {
float: none;
display: inline-block;
text-align: left;
font-size: 13px;
}
JSFiddle: http://jsfiddle.net/steyffi/ug4fzcjd/
I suggest simply to use the class text-center
:
<body class="container">
<div class="col-md-12 text-center">
<img data-src="holder.js/100x100" alt="" />
</div>
</body>
As koala_dev used in his approach 1, I would prefer the offset method instead of center-block or margins which has limited usage, but as he mentioned:
Now, there's an obvious drawback for this method, it only works for even column sizes, so only .col-X-2, .col-X-4, col-X-6, col-X-8 and col-X-10 are supported.
This can be solved using the following approach for odd columns.
<div class="col-xs-offset-5 col-xs-2">
<div class="col-xs-offset-3">
// Your content here
</div>
</div>
To be more precise Bootstrap's grid system contains 12 columns and to center any content let’s say, for instance, the content takes up one column. One will need to occupy two columns of Bootstrap's grid and place the content on half of the two occupied columns.
<div class="row">
<div class="col-xs-2 col-xs-offset-5 centered">
... your content / data will come here ...
</div>
</div>
'col-xs-offset-5' is telling the grid system where to start placing the content.
'col-xs-2' is telling the grid system how many of the left over columns should the content occupy.
'centered' will be a defined class that will center the content.
Here is how this example looks like in Bootstrap's grid system.
Columns:
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12
.......offset....... .data. .......not used........
If you put this on your row, all of the columns inside will be centered:
.row-centered {
display: flex;
justify-content: space-between;
}
<div class="container-fluid">
<div class="row">
<div class="col-lg-4 col-lg-offset-4">
<img src="some.jpg">
</div>
</div>
</div>
Try this code.
<body class="container">
<div class="col-lg-1 col-lg-offset-10">
<img data-src="holder.js/100x100" alt="" />
</div>
</body>
Here I have used col-lg-1, and the offset should be 10 for properly centered the div on large devices. If you need it to center on medium-to-large devices then just change the lg to md and so on.
The preferred method of centering columns is to use "offsets" (ie: col-md-offset-3
)
Bootstrap 3.x centering examples
For centering elements, there is a center-block
helper class.
You can also use text-center
to center text (and inline elements).
Responsive Demo: http://bootply.com/91632
EDIT - As mentioned in the comments, center-block
works on column contents and display:block
elements, but won't work on the column itself (col-*
divs) because Bootstrap uses float
.
Now with Bootstrap 4, the centering methods have changed..
text-center
is still used for display:inline
elementsmx-auto
replaces center-block
to center display:block
elementsoffset-*
or mx-auto
can be used to center grid columnsmx-auto
(auto x-axis margins) will center display:block
or display:flex
elements that have a defined width, (%
, vw
, px
, etc..). Flexbox is used by default on grid columns, so there are also various flexbox centering methods.
Demo Bootstrap 4 Horizontal Centering
For vertical centering in BS4 see https://stackoverflow.com/a/41464397/171456
The mechanism is:
Use mx-auto
in your div class using Bootstrap 4.
<div class="container">
<div class="row">
<div class="mx-auto">
You content here
</div>
</div>
</div>
You can use the very flexible solution flexbox to your Bootstrap.
justify-content: center;
can center your column.
Check out flex.
Don't forget to add !important
. Then you can be sure that element really will be in the center:
.col-centered{
float: none !important;
margin: 0 auto !important;
}
Another approach of offsetting is to have two empty rows, for example:
<div class="col-md-4"></div>
<div class="col-md-4">Centered Content</div>
<div class="col-md-4"></div>
With Bootstrap v4, this can be accomplished just by adding .justify-content-center
to the .row
<div>
<div class="row justify-content-center">
<div class="col-1">centered 1 column</div>
</div>
https://getbootstrap.com/docs/4.0/utilities/flex/#justify-content
Because I never have the need to center only a single .col-
within a .row
, I set the following class on the wrapping .row
of my target columns.
.col-center > [class*="col-"] {
float: none;
margin-left: auto;
margin-right: auto;
}
Example
<div class="full-container">
<div class="row col-center">
<div class="col-xs-11">
Foo
</div>
<div class="col-xs-11">
Bar
</div>
</div>
</div>
Append the following snippet inside your .row or your .col. This is for Bootstrap 4*.
d-flex justify-content-center
Source: Stackoverflow.com