css - vertically - make position absolute div center




How to center absolutely positioned element in div? (18)

I need to place a div (with position:absolute;) element in the center of my window. But I am having problems doing so, because the width is unknown.

I tried this. But it needs to be adjusted as the width is responsive.

.center {
  left: 50%;
  bottom:5px;
}

Any ideas?


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%);


#content { margin:0 auto; display:table; float:none;}
<body>
  <div>
    <div id="content">
      I'm the content
    </div>
  </div>
</body>

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/

Tested in Google Chrome, Firefox, and IE8

Hope this helps :)


A simple approach that worked for me to horizontally center a block of unknown width:

<div id="wrapper">
  <div id="block"></div>
</div>

#wrapper { position: absolute; width: 100%; text-align: center; }
#block { display: inline-block; }

A text-align property may be added to the #block ruleset to align its content independently of the alignment of the block.

This worked on recent versions of Firefox, Chrome, IE, Edge and Safari.


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


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/


I have used similar solution:

#styleName {
    position: absolute;
    margin-left: -"X"px;
}

Where "X" is half of the width of a div I want to display. Works fine for me in all browsers.


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 id 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.

HTML:

<div id='parent'>
  <div id='child'></div>
</div>

CSS:

#parent {
  display: table;
}
#child {
  display: table-cell;
  vertical-align: middle;
}

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>

My preferred centering method:

position: absolute;
margin: auto;
width: x%
  • absolute block element positioning
  • margin auto
  • same left/right, top/bottom

JSFiddle here


Searching for an solution I got answers above and could make content centered with Matthias Weiler answer but using text-align.

#content{
  position:absolute;
  left:0;
  right:0;
  text-align: center;
}

Worked with chrome and Firefox.


This is a trick I figured out for getting a DIV to float exactly in the center of a page. Really ugly of course, but works in all

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 that five years just flew by, didn't it?

<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>


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;
}

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>

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;
}

You can place the image in a div and add a div id and have the CSS for that div have a text-align:center

HTML:

<div id="intro_img">

    <img src="???" alt="???">

</div>

CSS :

#intro_img {
    text-align:center;
}

this work for vertical and horizontal

  #myContent{
        position: absolute;
        left: 0;
        right: 0;
        top:0;
        bottom:0;
        margin: auto;
   }

and if you want make element center of parent, set position of parent relative

 #parentElement{
      position:relative
  }

edit:

  • for vertical center align set height to your element. thanks to @Raul

  • if you want make element center of parent, set position of parent to relative


#container
{
  position: relative;
  width: 100%;
  float:left
}
#container .item
{
  width: 50%;
  position: absolute;
  margin: auto;
  left: 0;
  right: 0;
}




absolute