I want to position a <div>
To Center with w.r.t body width
To Middle with w.r.t body height
The div will have these properties:
width of div will be 90%
height of div auto, min. will be known
I've tested this in IE8, Firefox, Chrome. It does not work in IE7.
If you need this to work in <= IE7, I imagine the simplest solution would be to give up on pure CSS and use javascript for the vertical positioning.
Live Demo
HTML:
<div id="container">
<div id="content">
<input type="button" value="click me" onclick="javascript:document.getElementById('content').innerHTML += 'i i i i i i i i i i i i i i i i i i i i i i i i i<br />';" /><br />
i i i i i i i i i i i i i i i i i i i i i i i i i<br />
i i i i i i i i i i i i i i i i i i i i i i i i i<br />
i i i i i i i i i i i i i i i i i i i i i i i i i<br />
i i i i i i i i i i i i i i i i i i i i i i i i i<br />
</div>
</div>
CSS:
html, body {
margin: 0;
padding: 0;
border: 0;
width: 100%;
height: 100%
}
body {
display: table
}
#container {
width: 100%;
display: table-cell;
vertical-align: middle
}
#content {
background: red;
width: 90%;
margin: 0 auto;
min-height: 150px
}
You can center height like this (beware browser compatibility).
For centering width: you can use position: absolute; and left: 50%;, and them margin: -num;. In the margin, replace num with half of the width of the div.
Set the div with this. I believe it doesn't work in IE 7 and lower. Terrible IE....
margin:auto;
top:0;right:0;left:0;bottom:0;
position:absolute;
You may use margin(left,right) 5% to imitate the effect of centering width.
About the height centering, I don't know the way that you can do it with css alone (because of the unknown vertical size). But you may try using javascript to do that.
Here's an example: http://www.demtron.com/blog/post/2009/01/14/Centering-a-DIV-Window-with-Cross-Browser-JavaScript.aspx (you can ignore the detecting window size part).
Related
I'm building a responsive page that has an image and <div> side by side:
The width and height of the image retain their proportions and expand/contract with the browser window.
The width of the <div> does the same, but I'd like it to match the image in terms of height.
Is there any way of achieving this? Here's a Fiddle of the problem: http://jsfiddle.net/alecrust/xwJHw/
You can use display:table property for this. Write like this:
section{
display:table;
width:100%;
}
.text-box,.image{
display:table-cell;
vertical-align:top;
}
Check this http://jsfiddle.net/xwJHw/8/
Note: display:table works till IE8 & above.
You can use jQuery.
Calculate the hight of the image using $('#imgId').height() and the set the same to Div.
Also see the code, how heights are adjusted here http://filamentgroup.com/examples/equalHeights/
EDITED:
#alecrust: This is a fine solution and also implemented in your fiddle, See Here
A pure css solution: SEE DEMO
CSS:
#wrapper {
overflow: hidden;
background: #ccc;
}
.placeholder_image {
float: left;
width: 430px;
height: 264px;
background: #fff;
padding: 0 20px 0 0;
}
.placeholder_text {
background: #ccc;
margin-left: 450px;
display: block;
}
HTML:
<div id="wrapper">
<div class="placeholder_image">
<img src="http://www.qesign.com/templates/designs/christmas-after-effects-animated-e-card-template-31966.jpg" alt="" />
</div>
<div class="placeholder_text">
A block of text
</div>
</div>
So yet another question about vertically aligning an image within a div, but I think mine is different than the others I've found on here. I can't seem to find a solution that works for my situation.
I have a DIV that is 100% width (to it's container, which is floating left and has a set pixel width) and has a set pixel height. I have an image inside that I am positioning absolute to get it to the background of content within the DIV. The image is fluid with a width of 100%.
All works well, but I want to get the image to vertically align to the middle of the container and height is unknown.
Here is some sample code that shows what I'm trying to do:
<div class="container">
<div class="image-wrapper">
<img src="http://farm5.staticflickr.com/4111/4968056789_d872094672_o.jpg"
width="100%" />
</div>
<p>Some text</p>
</div>
And some sample CSS:
.container {
width:100%;
margin-top:10px;
height:100px;
overflow:hidden;
}
.image-wrapper {
position: relative;
}
.image-wrapper > img {
position: absolute;
z-index: -1;
}
p {
text-align: center;
padding-top: 10px;
color:#fff;
font-weight: bold;
}
But the flower should show up with it's center visible within the container div.
Any thoughts? I'm trying to avoid any Javascript sizing (the outer container, not shown in this sample, is already being sized). I'm not opposed to more DIVs, tables.. whatever you got!
A jsFiddle to demo this:
http://jsfiddle.net/JonMcL/sNz9h/
Why not go for the background-image property? That allows vertical centering...
http://jsfiddle.net/urrWS/
Assuming you want to only scale the image down and not stretch it beyond its native resolution this should do the trick. A little bit of jQuery is involved but it's minimal. Essentially, this adjusts the top-margin of the IMG on the window.resize event.
HTML
<div id="container">
<img id="image" src="image.jpg"> <!-- native size is 480x300 -->
</div>
CSS
#container {
margin: auto;
width: 80%;
height: 300px;
border: 1px solid gray;
}
#image {
display: block;
width: 100%;
max-width: 480px;
margin: auto;
}
jQuery
function adjustImage() {
$("#image").css('margin-top', ($("#container").height() - $("#image").height()) / 2);
}
$(window).load(function() {
adjustImage();
$(window).resize(function() {
adjustImage();
});
});
If I get what you need I would suggest setting the background image via css, then you can set the position correctly etc.
.container {
width:100%;
margin-top:10px;
background-image:url("http://farm5.staticflickr.com/4111/4968056789_d872094672_o.jpg");
background-repeat:no-repeat;
background-position:left center;
height:100px;
overflow:hidden;
}
http://jsfiddle.net/sNz9h/6/
A simple (one might think!) question to all CSS gurus: I would like to shrink a DIV snugly around an IMG. The IMG is 600 x 800 and I needed it much smaller. So I go {height: 100%; width: auto;} and constrain the height via a wrapper DIV. However, to maintain the (unknown to me) AR, I cannot fix the width on the DIV. I tried to set the wrapping DIV to "display: inline-block" or "float: left" or "position: absolute" or ... - no matter: most browsers will stretch that DIV 800px wide - the original width of the full-size IMG - so it looks sthg like this:
[[IMG].............................]
Bizarrely, I can add some text to the DIV (just to test), and that text will actually appear right next to the scaled IMG:
[[IMG]Hello world..................]
Does anyone here know why the original size of the IMG matters (for dimensioning the width, it does not affect the height)? And what I might be able to do to shrink the DIV?
Thanks for looking.
EDIT:
To test Pär Wieslander's idea, I wrote a little test bed that should help clarify what I am on about:
<style type="text/css">
html, body {
height: 100%;
}
#dialog {
background: green;
height: 50%;
position: relative;
}
#frame {
border: 2px solid black;
display: inline-block;
height: 100%;
position: absolute;
}
#img {
height: 100%;
width: auto;
}
</style>
<body>
<div id="dialog">
<div id="frame">
<img id='img' src='...' />
</div>
</div>
</body>
Just pick any large IMG of your choice. You should find an inexplicably wide frame around and image that has squeezed - height-wise - onto the green carpet.
If you specify the image's width or height as a percentage, that percentage is calculated in proportion to the size of the parent block. So specifying width: 50% on the image doesn't mean 50% of the original image width -- it means 50% of the width of the parent block. The same goes for the height. Thus, there will always be extra space around the image as long as you specify the width or height as a percentage.
The solution is simple -- specify the dimensions in pixels, ems or any other unit other than a percentage:
HTML
<div class="wrapper">
<img class="small" src="myimage.jpg">
</div>
CSS
img.small {
width: 150px; /* or whatever you like */
display: block; /* to avoid empty space below the image */
}
div.wrapper {
display: inline-block;
border: 1px solid #000;
}
Edit: Based on your comments and updated post, I understand that what you really want to do is to set the width of the surrounding div and make the image fill up that div. Here's an example that does that:
HTML
<div class="wrapper big">
<img src="myimage.jpg">
</div>
<div class="wrapper small">
<img src="myimage.jpg">
</div>
CSS
img {
display: block;
width: 100%;
}
.wrapper {
margin-top: 1em;
border: 1px solid #000;
}
.big {
width: 600px;
}
.small {
width: 300px;
}
So I go height="50%", say, and width="auto" (to maintain AR).
Why not just go width="50%" too as this would resolve it.
I think Pär's approach is right: don't do { height: fix; width: auto; } but do instead { height: auto; width: fix; } Works better.
This question already has answers here:
How can I vertically align elements in a div?
(28 answers)
Closed 3 years ago.
I'm trying to make a small username and password input box.
I would like to ask, how do you vertically align a div?
What I have is:
<div id="Login" class="BlackStrip floatright">
<div id="Username" class="floatleft">Username<br>Password</div>
<div id="Form" class="floatleft">
<form action="" method="post">
<input type="text" border="0"><br>
<input type="password" border="0">
</form>
</div>
</div>
How can I make the div with id Username and Form to vertically align itself to the center? I've tried to put:
vertical-align: middle;
in CSS for the div with id Login, but it doesn't seem to work. Any help would be appreciated.
The best approach in modern browsers is to use flexbox:
#Login {
display: flex;
align-items: center;
}
Some browsers will need vendor prefixes. For older browsers without flexbox support (e.g. IE 9 and lower), you'll need to implement a fallback solution using one of the older methods.
Recommended Reading
Browser support
A Guide to Flexbox
Using CSS Flexible Boxes
This can be done with 3 lines of CSS and is compatible back to (and including) IE9:
.element {
position: relative;
top: 50%;
transform: translateY(-50%);
}
Example: http://jsfiddle.net/cas07zq8/
credit
You can vertically align a div in another div. See this example on JSFiddle or consider the example below.
HTML
<div class="outerDiv">
<div class="innerDiv"> My Vertical Div </div>
</div>
CSS
.outerDiv {
display: inline-flex; // <-- This is responsible for vertical alignment
height: 400px;
background-color: red;
color: white;
}
.innerDiv {
margin: auto 5px; // <-- This is responsible for vertical alignment
background-color: green;
}
The .innerDiv's margin must be in this format: margin: auto *px;
[Where, * is your desired value.]
display: inline-flex is supported in the latest (updated/current version) browsers with HTML5 support.
It may not work in Internet Explorer :P :)
Always try to define a height for any vertically aligned div (i.e. innerDiv) to counter compatibility issues.
I'm pretty late to the party, but I came up with this myself and it's one of my favorite quick hacks for vertical alignment. It's crazy simple, and easy to understand what's going on.
You use the :before css attribute to insert a div into the beginning of the parent div, give it display:inline-block and vertical-align:middle and then give those same properties to the child div. Since vertical-align is for alignment along a line, those inline divs will be considered a line.
Make the :before div height:100%, and the child div will automatically follow and align in the middle of a very tall "line."
.parent:before, .child {
display:inline-block;
vertical-align:middle;
}
.parent:before {
content:""; // so that it shows up
height:100%; // so it takes up the full height
}
Here's a fiddle to demonstrate what I'm talking about. The child div can be any height, and you never have to modify its margins/paddings.
And here's a more explanatory fiddle.
If you're not fond of :before, you can always manually put in a div.
<div class="parent">
<div class="before"></div>
<div class="child">
content
</div>
</div>
And then just reassign .parent:before to .parent .before
If you know the height, you can use absolute positioning with a negative margin-top like so:
#Login {
width:400px;
height:400px;
position:absolute;
top:50%;
left:50%;
margin-left:-200px; /* width / -2 */
margin-top:-200px; /* height / -2 */
}
Otherwise, there's no real way to vertically center a div with just CSS
In my firefox and chrome work this:
CSS:
display: flex;
justify-content: center; // vertical align
align-items: center; // horizontal align
I found this site useful: http://www.vanseodesign.com/css/vertical-centering/
This worked for me:
HTML
<div id="parent">
<div id="child">Content here</div>
</div>
CSS
#parent {
padding: 5% 0;
}
#child {
padding: 10% 0;
}
#GáborNagy's comment on another post was the simplest solution I could find and worked like a charm for me, since he brought a jsfiddle I'm copying it here with a small addition:
CSS:
#wrapper {
display: table;
height: 150px;
width: 800px;
border: 1px solid red;
}
#cell {
display: table-cell;
vertical-align: middle;
}
HTML:
<div id="wrapper">
<div id="cell">
<div class="content">
Content goes here
</div>
</div>
</div>
If you wish to also align it horizontally you'd have to add another div "inner-cell" inside the "cell" div, and give it this style:
#inner-cell{
width: 250px;
display: block;
margin: 0 auto;
}
Vertically aligning has always been tricky.
Here I have covered up some method of vertically aligning a div.
http://jsfiddle.net/3puHE/
HTML:
<div style="display:flex;">
<div class="container table">
<div class="tableCell">
<div class="content"><em>Table</em> method</div>
</div>
</div>
<div class="container flex">
<div class="content new"><em>Flex</em> method<br></div>
</div>
<div class="container relative">
<div class="content"><em>Position</em> method</div>
</div>
<div class="container margin">
<div class="content"><em>Margin</em> method</div>
</div>
</div>
CSS:
em{font-style: normal;font-weight: bold;}
.container {
width:200px;height:200px;background:#ccc;
margin: 5px; text-align: center;
}
.content{
width:100px; height: 100px;background:#37a;margin:auto;color: #fff;
}
.table{display: table;}
.table > div{display: table-cell;height: 100%;width: 100%;vertical-align: middle;}
.flex{display: flex;}
.relative{position: relative;}
.relative > div {position: absolute;top: 0;left: 0;right: 0;bottom: 0;}
.margin > div {position:relative; margin-top: 50%;top: -50px;}
http://jsfiddle.net/dvL512e7/
Unless the aligned div has fixed height, try using the following CSS to the aligned div:
{
margin: auto;
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
display: table;
}
I needed to specify min-height
#login
display: flex
align-items: center
justify-content: center
min-height: 16em
if you are using fix height div than you can use padding-top according your design need.
or you can use top:50%. if we are using div than vertical align does not work so we use padding top or position according need.
simplest way to center your div element is to use this class with following properties.
.light {
margin: auto;
width: 50%;
border: 3px solid green;
padding: 10px;
}
Centering the child elements in a div. It works for all screen sizes
#parent {
background-color: red;
height: 160px;
display: flex;
/*vertical-align */
align-items: center;
/*horizontal align*/
justify-content: center;
}
#child {
background-color: orange;
height: 20px;
padding: 10px;
}
<div id="parent">
<div id="child">Content here</div>
</div>
I found a way that works great for me. The next script inserts an invisible image (same as bgcolor or a transparant gif) with height equal to half the size of the white-space on the screen. The effect is a perfect vertical-alignment.
Say you have a header div (height=100) and a footer div (height=50) and the content in the main div that you would like to align has a height of 300:
<script type="text/javascript" charset="utf-8">
var screen = window.innerHeight;
var content = 150 + 300;
var imgheight = ( screen - content) / 2 ;
document.write("<img src='empty.jpg' height='" + imgheight + "'>");
</script>
You place the script just before the content that you want to align!
In my case the content I liked to align was an image (width=95%) with an aspect ratio of 100:85 (width:height).Meaning the height of the image is 85% of it's width. And the Width being 95% of the screenwidth.
I therefore used:
var content = 150 + ( 0.85 * ( 0.95 * window.innerWidth ));
Combine this script with
<body onResize="window.location.href = window.location.href;">
and you have a smooth vertical alignment.
Hope this works for you too!
have you try this one?
.parentdiv {
margin: auto;
position: absolute;
top: 0; left: 0; bottom: 0; right: 0;
height: 300px; // at least you have to specify height
}
hope this helps
divs can't be vertically aligned that way, you can however use margins or position:relative to modify its location.
how could i vertically center a <div> within a <div> ?
my code so far:
<div style="height:322px;overflow:auto;">
<div style="border: Solid 1px #999999;padding:5px;">
</div>
</div>
i have tried "top:50%;" and "vertical-align:middle;" without success
EDIT: okay so it's been discussed a lot. and i've maybe started another mini flame war. but for argument sake, how would i do it with a table then? i've used css for everything else so far so it's not like i'm not trying to employ "good practices".
EDIT: the inner div does not have a fixed height
In short, you're stuffed. More on this in a recent question I asked Can you do this HTML layout without using tables? Basically the CSS fanatics need to get a grip and realize there's simply some things you can't do (or can't do well) without tables.
This anti-table hysteria is nothing short of ridiculous.
Table cells handle vertical centering really well and are backwards compatible as far as you could possibly care about. They also handle side-by-side content way better than floats, relative/absolute positioning or any of the other CSS type methods.
Joel coined (or at least popularized) the term "architect astronauts" in Don't Let Architecture Astronauts Scare You. Well, in that same vein I think the term "CSS Astronaut" (or "CSS Space Cadet") is equally appropriate.
CSS is an incredibly useful tool but it also has some pretty serious limitations. My favourite ishow numbered lists may only appear as "3." but not "3)" or "(3)" (at least prior to CSS3 generated content--or is it CSS2.1? Either way it's not widely supported). What an oversight.
But bigger than that is vertical centering and side-by-side layout. These two areas are still a huge problem for pure CSS. Another poster decided the relative positioning combined with negative margin heights was the way to go. How is that any better than:
<html>
<head>
<title>Layout</title>
<style type="text/css">
#outer { height: 200px; border: 1px solid black; width: 600px; background-color: #DDD; }
#inner { width: 150px; border: 1px solid red; background: yellow; margin: auto; line-height: 100%; }
</style>
</head>
<body>
<table>
<tr>
<td id="outer">
<div id="inner">Inner</div>
</td>
</tr>
</table>
</body>
</html>
which will work everywhere, everytime.
Here is an article on vertical centering in CSS. To achieve a similar thing they use three nested divs with relative+absolute+relative positioning just to get vertical centering. I'm sorry but whoever wrote that--and anyone who thinks that's a good diea--has simply lost the plot.
A counterargument is given in Tables vs CSS: CSS Trolls begone. The proof really is in the pudding. The vast majority of the top 20 (Alexa) sites still use tables for layout. With good reason.
So decide for yourself: do you want your site to work and spend less time getting it to work? Or do you want to be a CSS Astronaut?
It's non-trivial, there can be caveats, and it's not something CSS handles well at this point.
It is however quite widely discussed and googleable. This is a good example.
Whatever you do, please don't fallback to tables.
Edit: this is ridiculous, the following works perfectly well in a strict doc without resorting to table markup:
<style type="text/css">
.outer {height: 322px; overflow: hidden; position: relative;}
*|html .outer {display: table; position: static;}
.middle {position: absolute; top: 50%;}
*|html .middle {display: table-cell; vertical-align: middle; position: static;}
.inner {position: relative; top: -50%; overflow: auto;}
*|html .inner {position: static; max-height: 322px;}
</style>
<!--[if IE]>
<style>
.inner {height: expression(Math.min(this.scrollHeight,322)+'px'); width: 100%;} /* for explorer only */
</style>
<![endif]-->
<div class="outer">
<div class="middle">
<div class="inner">
Any text any height
</div>
</div>
</div>
I like this solution best. It is for IE8+, and is easy to understand.
<style>
/* Can be any width and height */
.block {
height:500px;
text-align: center;
}
/* The ghost, nudged to maintain perfect centering */
.block:before {
content: '';
display: inline-block;
height: 100%;
vertical-align: middle;
margin-right: -0.25em; /* Adjusts for spacing */
}
/* The element to be centered, can be any width or height */
.centered {
display: inline-block;
vertical-align: middle;
width: 300px;
}
</style>
<div class="block"><div class="centered">Centered Content</div></div>
top: 50%; should work. you need to put margin-top to negative half of the height or it will start in the middle. Therefore, you need the height of the inner div. You also probably need position:relative;
Something like this for you inner div.
position:relative;
top: 50%;
height:80px;
margin-top: -40px; /*set to a negative number 1/2 of your height*/
Not very neat working with negative sizes (what does it even mean?) but maybe the easiest way.
<div style="display: table; height: 400px; #position: relative; overflow: hidden;">
<div style=" #position: absolute; #top: 50%;display: table-cell; vertical-align: middle;">
<div style=" #position: relative; #top: -50%">
vertically centered
</div>
</div>
</div>
more information
Two techniques of many
Browser compatibility of the following has been tested in IE only. Modern browsers should handle these no problem.
#1 - Absolute and auto margin
Compatibility: IE 8 +
The combination of top, right, bottom, left and margin: auto centers the div vertically and horizontally.
The width and height are needed, but can be percentages
Can also be applied to an inner div with the parent set position: relative
Note: A max-width and max-height instead of a percentage height is possible IE 9 +. IE 8 requires a height.
html,
body {
height: 100%;
}
.outer {
background: #ff8f00;
height: 50%;
width: 50%;
margin: auto;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
}
<div class="outer"></div>
#2 - Flexbox
Compatibility: IE 11. See here for other browser support.
Using Flexbox and flexible vw and vh lengths
body {
margin: 0;
}
.outer {
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
}
.inner {
width: 50vw;
height: 50vh;
background: #ff8f00;
}
<div class="outer">
<div class="inner">
</div>
</div>
Do you absolutely need to do this with css? The above link looks pretty good, but you could get a result using javasctipt/jquery - determine the height of the innter div and adjust the margin.padding accordingly. Something similar to: (jquery)
var gap = ( $('the-outer-div').height() - $('the-inner-div').height() ) /2;
$('the-inner-div').css( "margin-top" , gap );
A table isn't necessary if you're willing to use the flexbox display model.
E.g.
<div style="height: 322px; width: 200px; display: flex; background: gray;">
<div style="border: Solid 1px #999999; padding:5px; margin: auto;">
This text would be both vertically AND horizontally centered, if it's inner height and width were less than the parent's height and width.
</div>
</div>
If you just want vertical centering use the rule "margin: auto 0;" in the child div.
p.s. You'll have to prefix your use of flexbox if you want cross-browser compatibility (e.g. "display: -webkit-flexbox;")
The display: flex property works especially well for centering, both vertically and horizontally. For vertical centering, add the properties display: flex and justify-content: center to the container.
Try line-height