I want to place a div (with position:absolute;) element in the center of the window. But I'm having problems doing so, because the width is unknown.
I tried the following CSS code, but it needs to be adjusted because the width is responsive.
.center {
left: 50%;
bottom: 5px;
}
How can I achieve this?
This works for me:
#content {
position: absolute;
left: 0;
right: 0;
margin-left: auto;
margin-right: auto;
width: 100px; /* Need a specific value to work */
}
<body>
<div>
<div id="content">
I'm the content
</div>
</div>
</body>
<body>
<div style="position: absolute; left: 50%;">
<div style="position: relative; left: -50%; border: dotted red 1px;">
I am some centered shrink-to-fit content! <br />
tum te tum
</div>
</div>
</body>
Responsive Solution
Here is a good solution for responsive design or unknown dimensions in general if you don't need to support IE8 and lower.
.centered-axis-x {
position: absolute;
left: 50%;
transform: translate(-50%, 0);
}
.outer {
position: relative; /* or absolute */
/* unnecessary styling properties */
margin: 5%;
width: 80%;
height: 500px;
border: 1px solid red;
}
.inner {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
/* unnecessary styling properties */
max-width: 50%;
text-align: center;
border: 1px solid blue;
}
<div class="outer">
<div class="inner">I'm always centered<br/>doesn't matter how much text, height or width i have.<br/>The dimensions or my parent are irrelevant as well</div>
</div>
Here is a JS Fiddle
The clue is, that left: 50% is relative to the parent while the translate transform is relative to the elements width/height.
This way you have a perfectly centered element, with a flexible width on both child and parent. Bonus: this works even if the child is bigger than the parent.
You can also center it vertically with this (and again, width and height of parent and child can be totally flexible (and/or unknown)):
.centered-axis-xy {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
}
Keep in mind that you might need transform vendor prefixed as well. For example -webkit-transform: translate(-50%,-50%);
<div style='position:absolute; left:50%; top:50%; transform: translate(-50%, -50%)'>
This text is centered.
</div>
This will center all the objects inside div with position type static or relative.
I just wanted to add if someone wants to do it with a single div tag then here is the way out:
Taking width as 900px.
#styleName {
position: absolute;
left: 50%;
width: 900px;
margin-left: -450px;
}
In this case one should know the width beforehand.
Responsive solution
Assuming the element in the div, is another div...
This solution works fine:
<div class="container">
<div class="center"></div>
</div>
The container can be any size (must be position relative):
.container {
position: relative; /* Important */
width: 200px; /* Any width */
height: 200px; /* Any height */
background: red;
}
The element (div) can also be any size (must be smaller than the container):
.center {
position: absolute; /* Important */
top: 50%; /* Position Y halfway in */
left: 50%; /* Position X halfway in */
transform: translate(-50%,-50%); /* Move it halfway back(x,y) */
width: 100px; /* Any width */
height: 100px; /* Any height */
background: blue;
}
The result will look like this. Run the code snippet:
.container {
position: relative;
width: 200px;
height: 200px;
background: red;
}
.center {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100px;
height: 100px;
background: blue;
}
<div class="container">
<div class="center"></div>
</div>
I found it very helpful.
Absolute Centre
HTML:
<div class="parent">
<div class="child">
<!-- content -->
</div>
</div>
CSS:
.parent {
position: relative;
}
.child {
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: auto;
}
Demo:
http://jsbin.com/rexuk/2/
It was tested in Google Chrome, Firefox, and Internet Explorer 8.
This works for vertical and horizontal:
#myContent{
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto;
}
And if you want make an element center of the parent, set the position of the parent relative:
#parentElement{
position: relative
}
For vertical center align, set the height to your element. Thanks to Raul.
If you want make an element center of the parent, set the position of the parent to relative
If you need to center horizontally and vertically too:
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
Searching for a solution, I got the previous answers and could make content centered with Matthias Weiler's answer, but using text-align:
#content{
position: absolute;
left: 0;
right: 0;
text-align: center;
}
It worked with Google Chrome and Firefox.
I understand this question already has a few answers, but I've never found a solution that would work in almost all classes that also makes sense and is elegant, so here's my take after tweaking a bunch:
.container {
position: relative;
}
.container .cat-link {
position: absolute;
left: 50%;
top: 50%;
transform: translate3d(-50%,-50%,0);
z-index: 100;
text-transform: uppercase; /* Forces CSS to treat this as text, not a texture, so no more blurry bugs */
background-color: white;
}
.color-block {
height: 250px;
width: 100%;
background-color: green;
}
<div class="container">
<a class="cat-link" href="">Category</a>
<div class="color-block"></div>
</div>
It is saying give me a top: 50% and a left: 50%, then transform (create space) on both the X/Y axis to the -50% value, in a sense "create a mirror space".
As such, this creates an equal space on all the four points of a div, which is always a box (has four sides).
This will:
Work without having to know the parent's height / width.
Work on responsive.
Work on either X or Y axis. Or both, as in my example.
I can't come up with a situation where it doesn't work.
Flexbox can be used to center an absolute positioned div.
display: flex;
align-items: center;
justify-content: center;
.relative {
width: 275px;
height: 200px;
background: royalblue;
color: white;
margin: auto;
position: relative;
}
.absolute-block {
position: absolute;
height: 36px;
background: orange;
padding: 0px 10px;
bottom: -5%;
border: 1px solid black;
}
.center-text {
display: flex;
justify-content: center;
align-items: center;
box-shadow: 1px 2px 10px 2px rgba(0, 0, 0, 0.3);
}
<div class="relative center-text">
Relative Block
<div class="absolute-block center-text">Absolute Block</div>
</div>
This is a mix of other answers, which worked for us:
.el {
position: absolute;
top: 50%;
margin: auto;
transform: translate(-50%, -50%);
}
This works on any random unknown width of the absolute positioned element you want to have in the centre of your container element:
Demo
<div class="container">
<div class="box">
<img src="https://picsum.photos/200/300/?random" alt="">
</div>
</div>
.container {
position: relative;
width: 100%;
}
.box {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
display: flex;
justify-content: center;
align-items: center;
}
It's possible to center an element that has aspect-ratio:1 with position absolute by using calc()
In the following example I'm using a circle because it's easier to explain and understand, but the same concept can be applied to any shape with aspect-ratio:1 meaning that the width and height are equal. (about aspect-ratio)
:root{
--diameter: 80px;
}
div{
position:absolute;
top: calc(50% - var(--diameter)/2);
right:calc(50% - var(--diameter)/2);
aspect-ratio:1;
width:var(--diameter);
border-radius:100%;
background:blue;
}
<div/>
Explanation
As far as I know, this is impossible to achieve for an unknown width.
You could - if that works in your scenario - absolutely position an invisible element with 100% width and height, and have the element centered in there using margin: auto and possibly vertical-align. Otherwise, you'll need JavaScript to do that.
I'd like to add on to bobince's answer:
<body>
<div style="position: absolute; left: 50%;">
<div style="position: relative; left: -50%; border: dotted red 1px;">
I am some centered shrink-to-fit content! <br />
tum te tum
</div>
</div>
</body>
Improved: /// This makes the horizontal scrollbar not appear with large elements in the centered div.
<body>
<div style="width:100%; position: absolute; overflow:hidden;">
<div style="position:fixed; left: 50%;">
<div style="position: relative; left: -50%; border: dotted red 1px;">
I am some centered shrink-to-fit content! <br />
tum te tum
</div>
</div>
</div>
</body>
Just wrap your content with a new div and use display flex and then use align-items: center; and justify-content: center; take a look...
<div class="firstPageContainer">
<div class="firstPageContainer__center"></div>
</div>
.firstPageContainer{
display: flex;
width: 1000px;
height: 1000px;
justify-content: center;
align-items: center;
background-color: #FF8527;
}
.firstPageContainer__center{
position:absolute;
width: 50px;
height: 50px;
background-color: #3A4147;
}
Sass/Compass version of a previous responsive solution:
#content {
position: absolute;
left: 50%;
top: 50%;
#include vendor(transform, translate(-50%, -50%));
}
This worked for me:
<div class="container><p>My text</p></div>
.container{
position: absolute;
left: 0;
right: 0;
margin-left: auto;
margin-right: auto;
}
My preferred centering method:
position: absolute;
margin: auto;
width: x%
absolute block element positioning
margin auto
same left/right, top/bottom
A JSFiddle is here.
Here's a useful jQuery plugin to do this. I found it here. I don't think it's possible purely with CSS.
/**
* #author: Suissa
* #name: Absolute Center
* #date: 2007-10-09
*/
jQuery.fn.center = function() {
return this.each(function(){
var el = $(this);
var h = el.height();
var w = el.width();
var w_box = $(window).width();
var h_box = $(window).height();
var w_total = (w_box - w)/2; //400
var h_total = (h_box - h)/2;
var css = {"position": 'absolute', "left": w_total + "px", "top":
h_total + "px"};
el.css(css)
});
};
#container
{
position: relative;
width: 100%;
float: left
}
#container .item
{
width: 50%;
position: absolute;
margin: auto;
left: 0;
right: 0;
}
HTML:
<div id='parent'>
<div id='child'></div>
</div>
CSS:
#parent {
display: table;
}
#child {
display: table-cell;
vertical-align: middle;
}
I know I already provided an answer, and my previous answer, along with others given, work just fine. But I have used this in the past and it works better on certain browsers and in certain situations. So I thought I'd give this answer as well. I did not "Edit" my previous answer and add it because I feel this is an entirely separate answer and the two I have provided are not related.
The accepted solution of this question didn't work for my case...
I'm doing a caption for some images and I solved it using this:
top: 0;
left: 0;
right: 0;
margin-left: auto;
margin-right: auto;
display: flex;
align-items: center;
figure {
position: relative;
width: 325px;
display: block
}
figcaption{
position: absolute;
background: #FFF;
width: 120px;
padding: 20px;
-webkit-box-shadow: 0 0 30px grey;
box-shadow: 0 0 30px grey;
border-radius: 3px;
display: block;
top: 0;
left: 0;
right: 0;
margin-left: auto;
margin-right: auto;
display: flex;
align-items: center;
}
<figure>
<img src="https://picsum.photos/325/600">
<figcaption>
But as much
</figcaption>
</figure>
HTML
<div id='parent'>
<div id='centered-child'></div>
</div>
CSS
#parent {
position: relative;
}
#centered-child {
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto auto;
}
http://jsfiddle.net/f51rptfy/
This solution works if the element has width and height
.wrapper {
width: 300px;
height: 200px;
background-color: tomato;
position: relative;
}
.content {
width: 100px;
height: 100px;
background-color: deepskyblue;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: auto;
}
<div class="wrapper">
<div class="content"></div>
</div>
.center {
position: absolute
left: 50%;
bottom: 5px;
}
.center:before {
content: '';
display: inline-block;
margin-left: -50%;
}
This is a trick I figured out for getting a DIV to float exactly in the center of a page. It is really ugly of course, but it works in all browsers.
Dots and Dashes
<div style="border: 5 dashed red;position:fixed;top:0;bottom:0;left:0;right:0;padding:5">
<table style="position:fixed;" width="100%" height="100%">
<tr>
<td style="width:50%"></td>
<td style="text-align:center">
<div style="width:200;border: 5 dashed green;padding:10">
Perfectly Centered Content
</div>
</td>
<td style="width:50%"></td>
</tr>
</table>
</div>
Cleaner
Wow, those five years just flew by, didn't they?
<div style="position:fixed;top:0px;bottom:0px;left:0px;right:0px;padding:5px">
<table style="position:fixed" width="100%" height="100%">
<tr>
<td style="width:50%"></td>
<td style="text-align:center">
<div style="padding:10px">
<img src="Happy.PM.png">
<h2>Stays in the Middle</h2>
</div>
</td>
<td style="width:50%"></td>
</tr>
</table>
</div>
HTML:
<div class="wrapper">
<div class="inner">
content
</div>
</div>
CSS:
.wrapper {
position: relative;
width: 200px;
height: 200px;
background: #ddd;
}
.inner {
position: absolute;
top: 0; bottom: 0;
left: 0; right: 0;
margin: auto;
width: 100px;
height: 100px;
background: #ccc;
}
This and more examples here.
I want to dynamically append to the end of the body a fixed-positioned to the bottom box that has 1000px width and is centered horizontally.
When I create it with percentage width I can easily add margins and everything is ok, but when I have it in pixels I can't add margins anymore (it has to be responsive). auto doesn't work either.
How can I do that?
<div style="position: fixed; bottom: 0; width: 1000px; margin: 0 auto; padding: 0;height: 100px; background-color: green;">
</div>
Try this also:
div{
position: fixed;
bottom: 0;
width: 1000px;
left: 50%;
transform:translateX(-50%);
height: 100px;
background-color: green;
}
http://jsfiddle.net/eesry2ss/
body:after {
content:"";
width: 1000px;
height: 100px;
position: fixed;
left: 50%;
bottom:0;
margin-left: -500px;
background-color:green;
}
Try this:
div{
position: fixed;
bottom: 0;
width: 1000px;
left: 50%;
margin-left: -500px;
height: 100px;
background-color: green;
}
<div>
</div>
Try CSS3, to avoid giving calculated values in pixel for your margins.
left:50%;
transform: translateX(-50%);
Here's a demo: https://jsbin.com/zejutisabo/edit?html,css,output
I'm trying to create something in JQuery Mobile, however I need to be able to position a button from the center. Right now, the button is positioned from the top-left corner, and as such if I resize the window, everything is horribly off-center.
<body>
<button>Button</button>
<div />
</body>
div {
position: absolute;
width: 200px;
height: 200px;
background-color: black;
}
button {
position: absolute;
top: 200px;
left: 200px;
}
Fiddle: http://jsfiddle.net/chpt3x1v/4/
I couldn't get JQM working in JSFiddle (didn't know how without it showing loads of errors), so I just used a regular button, but the same premise applies.
TWO IMAGES:
As you can see, it is completely off-center.
UPDATED ANSWER:
You need to give the button a set width and height, and then set the top margin to negative one half the height, and the left margin to negative half the width:
Updated DEMO
<div class="thediv"></div>
<button data-role="none" class="theButton">Button</button>
.thediv {
position: absolute;
width: 200px;
height: 200px;
background-color: black;
}
.theButton {
position: fixed; /* or absolute */
top: 200px;
left: 200px;
width: 80px;
height: 80px;
margin-top: -40px;
margin-left: -40px;
}
ORIGINAL ANSWER:
You can use fixed positioning and a negative margin to keep it centered:
<div data-role="page" id="page1">
<div role="main" class="ui-content">
<div class="centered"><button>Button</button></div>
</div>
</div>
.centered {
position: fixed; /* or absolute */
top: 50%;
left: 50%;
background-color: black;
width: 200px;
height: 200px;
margin-top: -100px;
margin-left: -100px;
}
.centered button {
margin: 0 !important;
height: 100%;
}
Updated FIDDLE
Firstly your code doesn't have an opening tag. Secondly, you need to have the parent element, i.e. the div, positioned as relative.
Third, you've positioned your button to the very edge of the div by using the same dimensions. Try:
<body>
<div>
<button>Button</button>
<div />
</body>
div {
position: relative;
width: 200px;
height: 200px;
background-color: black;
}
button {
position: absolute;
top: 50%;
left: 50%;
z-index: 1;
}
The z-index property will allow the button to overlay the div.
I am a CSS beginner.
I want a half transparent centered div with the main content. Below it should be a fixed div containing the table of contents.
Below is my attempt on this. This works with a certain browser size. But when the size of the browser window changes, the table of content moves.
I want the table of contents to stay at a fixed distance to the main div.
jsFiddle link
With this window size everything looks ok:
Decreasing the window size moves toc under content div:
html
<html>
<head>
<title>Testpage</title>
<link rel='stylesheet' href='css/testpage.css'>
</head>
<body>
<div id="contenttable">
<h1>Contents</h1>
Content 01<br>
</div>
<div id="content">
some text
</div>
</body>
</html>
css:
#content{
height: 1000px;
width: 320px;
position: relative;
top: 50px;
left: 50%;
margin-left: -160px;
background-color: cyan;
}
#contenttable{
padding: 12px;
width:100%;
height:200px;
position: fixed;
background-color: yellow;
top: 125px;
left: 6%;
}
#contenttable a{
position: relative;
top: 0px;
left: 66%;
}
#contenttable h1{
position: relative;
top: 0px;
left: 66%;
}
You can use an inner div absolutely positioned inside the fixed TOC, and set its position.
Use CSS3 Calc to elaborate the right position for your main content.
Use opacity for transparency, and avoid setting the height of the main content div for automatic overflow handing.
Demo: http://jsfiddle.net/vMAQz/1/
CSS
#contenttable {
padding: 12px;
width:100%;
height:200px;
position: fixed;
background-color: yellow;
top: 125px;
}
#innerContent {
position: absolute;
right: 0;
top: 0;
bottom: 0;
width: 100px;
padding: 30px;
}
#content {
padding: 10px;
opacity: 0.8;
width: 320px;
position: relative;
top: 50px;
left: calc(100% - 480px);
background-color: cyan;
}
HTML
<div id="contenttable">
<div id="innerContent">
<h1>Contents</h1>
Content 01
<br/>
</div>
</div>
<div id="content">
some text
</div>
all you need to do is change the width of the content div
#content{
height: 1000px;
width: 30%;
position: relative;
top: 50px;
left: 50%;
margin-left: -160px;
background-color: cyan;
}
I'm trying to place some large text in the dead center of the page. I only want (prefer) a body tag in the page and nothing else. I've tried using display: table-cell and setting the vertical-alignment to middle but that did not work with a height: 100%
I then found another question on stackoverflow which addressed this problem but I realized it does not work with bigger font. This is what I have so far: http://jsfiddle.net/aECYS/
Push the div to top and left based on the width and height specified.
CSS
body{ background-color: #000;}
div{
background-color: #000;
width:800px;
height: 200px; line-height: 200px;
position: absolute;
top: 50%; margin-top:-100px;
left: 50%; margin-left:-400px;
font-weight: bold;
font-size: 100px;
text-transform: uppercase;
color: #ccc; text-align:center
}
DEMO
If your position is absolute then you move your text anywhere you want change your css attribute with this.
Note: Absolutely positioned elements can overlap other elements.
position: absolute;
top: 37%;
left: 34%;
See Demo
Set width and height as 100%
width: 100%;
height: 100%;
position: absolute;
top: 50%;
left: 50%;
Then the text center with the different screen size
.Absolute-Center {
margin: auto;
position: absolute;
top: 0; left: 0; bottom: 0; right: 0;
}
is the best way, choose your class though here.