Argthtjtr

JSFiddle

body {

	margin: 0;

}



#over img {

	margin-left: auto;

	margin-right: auto;

	display: block;

}

<div id="over" style="position:absolute; width:100%; height:100%">

	<img src="http://www.garcard.com/images/garcard_symbol.png">

</div>

<div style="display:table-cell; vertical-align:middle; text-align:center">

<img src="img.png">

</div>

Seems to me that you also wanted that image to be vertically centered within the container. (I didn't see any answer that provided that)

Working Fiddle:

1. Pure CSS solution


2. Not breaking the document flow (no floats or absolute positioning)


3. Cross browser compatibility (even IE6)


4. Completely responsive.

HTML

<div id="over">

    <span class="Centerer"></span>

    <img class="Centered" src="http://th07.deviantart.net/fs71/200H/f/2013/236/d/b/bw_avlonas_a5_beach_isles_wallpaper_image_by_lemnosexplorer-d6jh3i7.jpg" />

</div>

CSS

*

{

    padding: 0;

    margin: 0;

}

#over

{

    position:absolute;

    width:100%;

    height:100%;

    text-align: center; /*handles the horizontal centering*/

}

/*handles the vertical centering*/

.Centerer

{

    display: inline-block;

    height: 100%;

    vertical-align: middle;

}

.Centered

{

    display: inline-block;

    vertical-align: middle;

}

Note: this solution is good to align any element within any element.
for IE7, when applying the .Centered class on block elements, you will have to use another trick to get the inline-block working. (that because IE6/IE7 dont play well with inline-block on block elements)

This can also be done using the Flexbox layout:

STATIC SIZE

.parent {

    display: flex;

    height: 300px; /* Or whatever */

    background-color: #000;

}



.child {

    width: 100px;  /* Or whatever */

    height: 100px; /* Or whatever */

    margin: auto;  /* Magic! */

}

<div class="parent">

    <img class="child" src="https://i.vimeocdn.com/portrait/58832_300x300"/>

</div>

DYNAMIC SIZE

html, body {

  width: 100%;

  height: 100%;

  display: flex;

  background-color: #999;

}



* {

  margin: 0;

  padding: 0;

}



.parent {

  margin: auto;

  background-color: #000;

  display: flex;

  height: 80%;

  width: 80%;

}



.child {

  margin: auto;  /* Magic! */

  max-width: 100%;

  max-height: 100%;

}

<div class="parent">

  <img class="child" src="https://i.vimeocdn.com/portrait/58832_300x300"/>

</div>

I found the example in this article, which does a great job explaining the how to use layout.

img.centered {

   display: block;

   margin: auto auto;

}

#over {position:relative; text-align:center; 

       width:100%; height:100%; background:#CCC;}



#over img{

    position: absolute;

    margin: auto;

    top: 0;

    left: 0;

    right: 0;

    bottom: 0;

}

You can do this easily by using display:flex css property

#over {

  height: 100%;

  width: 100%;

  display: flex;

  align-items: center;

  justify-content: center;

}

I still had some issues with other solution presented here. Finally this worked best for me:

<div class="parent">

    <img class="child" src="image.png"/>

</div>

css3:

.child {

 display: block;

 position: absolute;

 top: 50%;

 left: 50%;

 transform: translate(-50%, -50%);

 -webkit-transform: translate(-50%, -50%); /* Safari and Chrome */

 -moz-transform: translate(-50%, -50%); /* Firefox */

 -ms-transform: translate(-50%, -50%); /* IE 9 */

 -o-transform: translate(-50%, -50%); /* Opera */

 // I suppose you may like those too:

 // max-width: 80%;

 // max-height: 80%;

}

You can read more about that approach at this page.

Basically, setting right and left margin to auto will cause the image to center align.

<div id="over" style="position:absolute; width:100%; height:100%>

<img src="img.png" style="display: block; margin: 0 auto;">

</div>

This would be a simpler approach

#over > img{

    display: block;

    margin:0 auto; 

}

setting the img to display:inline-block while having set the superior div to text-align:center will do the job too

EDIT: to those folks who are playing with display:inline-block >>> don't forget that e.g. two divs like

<div>Div1 content</div>NOSPACEHERE<div>Div2 content</div>

really have no spaces between them (as seen here).

Just basic to avoid these (inline block inherent) gaps between them. These gaps can be seen between every two words I'm writing right now! :-) So .. hope this helps some of you.

SIMPLE. 2018. FlexBox. To Check Browser Support - Can I Use


Minimal Solution:

div#over { 

   display: flex; 

   justify-content: center; 

   align-items: center; 

}

To get the widest browser support possible:

div#over { 

   display: -webkit-flex;

   display: -ms-flex; 

   display: flex; 

   justify-content: center; 

   -ms-align-items: center; 

   align-items: center; 

}

I've tried many approaches but only this one works for multiple inline elements inside a container div. Here is code to align everything in div at middle.

CSS

.divContainer

{

    vertical-align: middle;

    text-align: center; <!-- If you want horizontal center alignment -->

}

.divContainer > *

{

    vertical-align: middle;

}

HTML

<div class="divContainer">

    <span>Middle Text</span>

    <img src="test.png"/>

</div>

Sample code is here: https://jsfiddle.net/yogendrasinh/2vq0c68m/

CSS File

.over {

    display : block;

    margin : 0px auto;

Try this minimal code:

<div class="outer">

    <img src="image.png"/>

</div>

And CSS:

.outer{

  text-align: center;

}

.outer img{

  display: inline-block;

}

many answer suggests to use margin:0 auto but this works only when the element you trying to make centered is not floating on left or right, that is float css attribute isn't set. In order to do this apply display attribute to table-cell and then apply margin of left and right to auto so your style will look like style="display:table-cell;margin:0 auto;"

    <div>

    <p style="text-align:center; margin-top:0px; margin-bottom:0px; padding:0px;">

    <img src="image.jpg" alt="image"/>

    </p>    

    </div>

HTML:

<div id="over">

    <img src="img.png">

</div>

CSS:

#over {

  text-align: center;

}



#over img {

  vertical-align: middle;

}

For center horizontally Just put

#over img {

    display: block;

    margin: 0 auto;

    clear:both;

}

Another method:

#over img {

    display: inline-block;

    text-align: center;

}

For center vertically Just put:

   #over img {



           vertical-align: middle;

        }

This worked for me:

#image-id {

    position: absolute;

    top: 0; left: 0; right: 0; bottom: 0;

    width: auto;

    margin: 0 auto;

}

Well, we are in 2016... why not use flexbox?
It's also responsive. Enjoy.

#over{

display:flex;

align-items:center;

justify-content:center;

}

<div id="over">

	<img src="http://www.garcard.com/images/garcard_symbol.png">

</div>

this did the trick for me.

<div class="CenterImage">

         <asp:Image ID="BrandImage" runat="server" />

</div>

'Note: do not have a css class assocaited to 'BrandImage' in this case

CSS:

.CenterImage {

    position:absolute; 

    width:100%; 

    height:100%

}



.CenterImage img {

    margin: 0 auto;

    display: block;

}

Use positioning. The following worked for me...

With zoom to the center of the image (image fills the div):

div{

    display:block;

    overflow:hidden;

    width: 70px; 

    height: 70px;  

    position: relative;

}

div img{

    min-width: 70px; 

    min-height: 70px;

    max-width: 250%; 

    max-height: 250%;    

    top: -50%;

    left: -50%;

    bottom: -50%;

    right: -50%;

    position: absolute;

}

Without zoom to the center of the image (image does not fill the div):

   div{

        display:block;

        overflow:hidden;

        width: 100px; 

        height: 100px;  

        position: relative;

    }

    div img{

        width: 70px; 

        height: 70px; 

        top: 50%;

        left: 50%;

        bottom: 50%;

        right: 50%;

        position: absolute;

    }

You can take a look on this solution:

Centering horizontally and vertically an image in a box

<style type="text/css">

.wraptocenter {

    display: table-cell;

    text-align: center;

    vertical-align: middle;

    width: ...;

    height: ...;

}

.wraptocenter * {

    vertical-align: middle;

}

.wraptocenter {

    display: block;

}

.wraptocenter span {

    display: inline-block;

    height: 100%;

    width: 1px;

}

</style>

<!--[if lt IE 8]-->

<style>

.wraptocenter span {

    display: inline-block;

    height: 100%;

}

</style>

<!--[endif]-->



<div class="wraptocenter"><span></span><img src="..." alt="..."></div>

A simple way would be creating separate styles for both the div and the image and then position them independently. Say if I want to set my image position to 50%, then I would have code which looks like the following....

#over{

  position:absolute;

  width:100%;

  height:100%;

}

#img{

  position:absolute;

  left:50%;

  right:50%;

}

<div id="over">

 <img src="img.png" id="img">

</div>

#over {

    display: table-cell; 

    vertical-align: middle; 

    text-align: center;

    height: 100px;

}

Modify height value for your need.

This should work.

IMPORTANT FOR TEST: To Run code snippet click left button RUN code snippet, then right link Full page

#fader{

position:fixed;z-index: 10;

top:0;right:0;bottom:0;left:0;

opacity: 0.8;background: black;

width:100%;height:100%;

text-align: center;

}

.faders{display:inline-block;height:100%;vertical-align:middle;}

.faderi{display:inline-block;vertical-align:middle;}

<div id="fader">

<span class="faders"></span>

<img class="faderi" src="https://i.stack.imgur.com/qHF2K.png" />

</div>

Use bootstraps align-items and justify-content. See example below:

<div class="well" style="align-items:center;justify-content:center;">

    <img src="img_source" height="50px" width="50px"/>

</div>

I add some more properties to the CSS. Like so:

div#over {

    width: 100%;

    height: 100%;

    display: flex;

    justify-content: center;

    align-items: center;

    -ms-align-items: center;

    display: -webkit-flex;

    display: -ms-flex; 

    display: flex;

}