This question already has answers here:
CSS horizontal centering of a fixed div?
(9 answers)
Closed 7 years ago.
I want div to be center horizontally, css code is this:
<style type="text/css">
#footer{
position: fixed;
bottom: 20px;
background-color: red;
width:500px;
margin: auto;/*left:auto; right:auto;*/
}
</style>
and html code:
<body>
<div id="footer">hello world</div>
</body>
I think there is no need to explain my css code, it is almost self-explanatory, but the div is not center horizontally, is there any way to make this?
Thanks in advance.
Try this
#footer{
position: fixed;
bottom: 20px;
background-color: red;
width:80%;
margin: 0 0 0 -40%;
left:50%;
}
JS Fiddle Example
The point to be noted here is, the negative margin-left of exactly half value of width and set the left 50 % of the body
This should work well for you. It works by adding a container div.
<style>
#footer-container{
position: fixed;
bottom: 0;
left: 0;
width: 100%;
text-align: center;
}
#footer
{
width:500px;
margin:0 auto;
margin-bottom:20px;
background-color:red;
}
</style>
<div id="footer-container">
<div id="footer">hello world</div>
</div>
Put another div inside it with relative position, margin: auto.
Give the fixed one 100% width.
Otherwise you can hack it with negative margin 'trick'
div {
position: fixed;
left: 50%;
width: 500px;
margin-left: -250px;
}
If you're working with modern browsers you can use the flexbox layout module: http://caniuse.com/#feat=flexbox.
Flexbox documentation: developer.mozilla.org/en-US/docs/Web/Guide/CSS/Flexible_boxes
Note: Can't post more than two links due to my rep.
JSFiddle.
(Using a footer tag instead of a div#footer as it's simpler.)
<div id="footer-container">
<footer>hello world</footer>
<div>
#footer-container {
bottom: 20px;
position: fixed;
display: flex;
justify-content: center;
width: 100%;
}
footer {
width: 500px;
background-color: red;
}
justify-content: center; 'centers' #footer-container's children, which is just the footer element in this case.
This is very similar to Nick N.'s solution, except that you don't have to reset the text-align property on the footer, and that this is probably the non-'trick' way that you wanted.
The accepted solution is slightly off because the footer's width in that case is variable (80%) instead of at 500px.
To other readers, if your parent is a form element, and the child is an input element, use flex: 1; on the input (child) element, and use max-width: 500px; instead of width: 500px;. Using flex: 1; should make the input element expand to fill the form element's width, which it might not otherwise do.
Related
I have a div called #text, inside another div #box. Right now I've tried to center #text by doing this:
#box {
width: 50%;
#text {position: relative; margin-left: 48%;}
}
This code puts #text approximately in the center of #box, but when I resize the screen, the size of #text changes relative to the size of the screen, so the size of its margin-right changes, and it is no longer exactly in the center.
I've heard there is a "hack" for this involving a few wrapper divs, but I don't want to overcomplicate my css or html. Is there a simple way to horizontally position a div exactly in the center of its parent?
Using flexbox is IMO the best way to center child horizontaly and verticaly. Its support is good.
First off the CSS you posted is not valid. You can accomplish what you are looking for with something like this:
CSS
body {
width:100%;
height: 100%;
margin: 0;
padding: 0;
}
#box {
width:100%;
height: 500px;
background: lightblue
}
#test {
width: 300px;
height: 300px;
border: 1px solid red;
margin: 0 auto
}
HTML
<div id="box">
<div id="test">
hello
</div>
</div>
See the JS.Fiddle
use margin: 0 auto; in the css of #text
You want exact center of page, regardless of content? Do something like this:
p {
position: absolute;
left: 50%;
transform: translateX(-50%);
}
Relative to the parent, set the following attribute on the container for your element:
div.containerOfPs {
position: relative;
}
I have two child divs (inline-block) inside a wrapper div. I want the left Div to be centered and the right one simply on the right of the left div.
<div id="Wrapper1"><div id="leftElement1">LEFT ELEMENT</div><div id="rightElement1">RIGHT</div></div>
The Problem is, if I use margin-left to reposition the whole wrapper, the Left Element is not centered on small screen sizes.
If I center leftElement1 and use position: absolute to position rightElement1 the Warpper Div does not adjust its width and height according to its children.
For a better understanding check http://jsfiddle.net/aaq810gs/6/
Any help is appreciated!
If i understand right you want something like this:
#rightElement1 {
background-color: blue;
position: relative;
width: 100px;
display: inline-block;
height: 50px;
float: right;
top: -100px;
}
Applied in your first example.
fiddle
Or something like this:
#rightElement1 {
background-color: blue;
position: fixed;
width: 100px;
display: inline-block;
}
fiddle
I am not really sure if I get exactly what you mean, but I think something like this could work for you.
- You better switch to %, because than it will work better on mobile devices.
- Second thing is adding margin:0 auto; for #leftElement1 so it stays in the middle. #rightElement2 will just stick to it on the right, because it is inline-block.
Now you can add whatever margin to the wrapper and it stays the same.
Fiddle http://jsfiddle.net/stassel/vzx6fm55/
HTML:
<div id="Wrapper1">
<div id="leftElement1">LEFT ELEMENT</div>
<div id="rightElement1">RIGHT</div>
</div>
CSS:
#Wrapper1 {
width: 90%;
background-color: red;
margin: 0 auto;
white-space: nowrap;
padding: 10px;
margin-left:10%;}
#rightElement1 {
background-color: blue;
width: 10%;
display: inline-block;
height: 50px;}
#leftElement1 {
background-color: green;
width: 60%;
margin:0 auto;
display: inline-block;}
div {
height: 100px;
text-align: center;
color: white;}
SOLVED
Thank you for all your answers! Unfortunately I wasn't able to describe my Question properly, so none of the solutions worked.
Finally I was able to solve the problem myself. The Key to the solution was another centered outer wrapper, with a fixed size of the to-be-centered Element and overflow: visible. The inner content overlaps now the outer wrapper.
#outerWrapper {
width: 700px;
overflow: visible;
margin: 0 auto;
}
#Wrapper {
width: 810px;
background-color: red;
}
http://jsfiddle.net/aaq810gs/9/
I'm using Chris Coyier's full width hack on a site I am building, but stumped on how I can get the div to have the height of whatever it is containing.
Usually I would achieve this by adding overflow:auto to the container, but if I do that it breaks the hack. Is it possible to achieve a height and still use this hack?
You can see my problem here: http://beta.revival.tv/
Here is my CSS:
#content-wrap:before, #content-wrap:after {content: ""; position: absolute; top: 0; bottom: 0; width: 9999px;}
#content-wrap:before {right: 100%;}
#content-wrap:after {left: 100%;}
#content-wrap, #content-wrap:before, #content-wrap:after {background:#666;}
#content-wrap {
position: relative;
width:1000px;
margin:0 auto;
padding:25px 0;
}
You can add another div to contain the content inside of the #content-wrap div and then apply overflow: auto; and width: 100%; to it
<div id="content-wrap">
<div id="content"></div>
</div>
#content {
overflow: auto;
width: 100%;
}
I don't know your html, but if the problem is caused by floating elements inside of the div, you may also want to try using display: inline-block; instead
I want to set vertical alignment of image inside a div. I use img { vertical-align:middle}
but it is not working.
Using the line-height property will solve the problem:
<style>
.someclass {
width: 300px;
height: 300px;
text-align: center;
line-height: 300px;
border: dotted;
}
.someclass img {
margin: auto;
vertical-align: middle;
}
</style>
<div class="someclass">
<img src="someimg.jpg" border="0" alt="">
</div>
This is a solution that doesn't require JavaScript (as my previous solution did).
You can achieve what you want by assigning display: table-cell to the containing div. Here's an example: http://jsbin.com/evuqo5/2/edit
I feel I must warn you that you will need to test this in every browser you intend to support. Support for the table-cell value is fairly new, particularly in Firefox. I know it works in Firefox 4, but I don't know about any of the 3.x iterations. You'll also want to test in IE (I've only tested in Chrome 10 and Firefox 4).
The CSS:
div#container {
width: 700px;
height: 400px;
position: relative;
border: 1px solid #000;
display: table-cell;
vertical-align: middle;
}
div#container img {
margin: 0 auto;
display: block;
}
You won't need the div#container img styles if you don't also want to horizontally align the image.
If you're trying to do what I think, vertical align isn't going to work; you'll need to use positioning.
In general, position the container relative, and then position the image absolute, with top and left set to 50%, and then move the image back to the center by setting negative margins equal to half the width / height.
Here's a working example: http://jsbin.com/evuqo5/edit
Basic CSS is this:
#container { position: relative; }
#container img {
position: absolute;
left: 50%;
top: 50%;
margin-top: /* -1/2 the height of the image */
margin-left: /* -1/2 the width of the image */
}
See this awser: How to vertical align image inside div
If you want to align horizontally also, add the right and left, like this:
div {
position:relative;
}
img {
position:absolute;
top:0;
bottom:0;
left:0;
right:0;
margin:auto;
}
The following post has some useful references:
Text Alignment w/ IE9 in Standards-Mode
Also, depending on which version of IE you are testing against, you may end up needing some browser-specific hacks or some jQuery/JavaScript code.
If you have to, use a one-row-one-cell table and take advantage of the vertical-align property. This is brute-force, not overly semantic, but it works.
If you set the div display attribute to table-cell then vertical-align: middle; will work.
The vertical-align rule only affects table cells or elements with display: table-cell.
See this article from SitePoint for a detailed explanation.
<style>
/* change body to .someClasses's parent */
body {
width: 100%;
height: 100%;
display: table;
}
body > .someclass {
width: 300px;
height: 300px;
text-align: center;
border:dotted;
margin: 0 auto
display: table-cell;
vertical-align: middle;
}
</style>
<body>
<div class="someclass">
<img src="someimg.jpg" border="0" alt="">
</div>
</body>
How can I center an image horizontally and aligned to the bottom of the container at the same time?
I have been able to center the image horizontally by its self. I have also been able to align the bottom of the container by its self. But I have not been able to do both at the same time.
Here is what I have:
.image_block {
width: 175px;
height: 175px;
position: relative;
margin: 0 auto;
}
.image_block a img {
position: absolute;
bottom: 0;
}
<div class="image_block">
<img src="..." border="0">
</div>
That code aligns the image to the bottom of the div. What do I need to add/change to make it also center the image horizontally inside the div? The image size is not known before hand but it will be 175x175 or less.
.image_block {
width: 175px;
height: 175px;
position: relative;
}
.image_block a {
width: 100%;
text-align: center;
position: absolute;
bottom: 0px;
}
.image_block img {
/* nothing specific */
}
explanation: an element positioned absolutely will be relative to the closest parent which has a non-static positioning. i'm assuming you're happy with how your .image_block displays, so we can leave the relative positioning there.
as such, the <a> element will be positioned relative to the .image_block, which will give us the bottom alignment. then, we text-align: center the <a> element, and give it a 100% width so that it is the size of .image_block.
the <img> within <a> will then center appropriately.
This also works (taken a hint from this question)
.image_block {
height: 175px;
width:175px;
position:relative;
}
.image_block a img{
margin:auto; /* Required */
position:absolute; /* Required */
bottom:0; /* Aligns at the bottom */
left:0;right:0; /* Aligns horizontal center */
max-height:100%; /* images bigger than 175 px */
max-width:100%; /* will be shrinked to size */
}
wouldn't
margin-left:auto;
margin-right:auto;
added to the .image_block a img do the trick?
Note that that won't work in IE6 (maybe 7 not sure)
there you will have to do on .image_block the container Div
text-align:center;
position:relative; could be a problem too.
This is tricky; the reason it's failing is that you can't position via margin or text-align while absolutely positioned.
If the image is alone in the div, then I recommend something like this:
.image_block {
width: 175px;
height: 175px;
line-height: 175px;
text-align: center;
vertical-align: bottom;
}
You may need to stick the vertical-align call on the image instead; not really sure without testing it. Using vertical-align and line-height is going to treat you a lot better, though, than trying to mess around with absolute positioning.
Remove the position: relative; line. I'm not sure why exactly but it fixes it for me.
have you tried:
.image_block{
text-align: center;
vertical-align: bottom;
}
#header2
{
display: table-cell;
vertical-align: bottom;
background-color:Red;
}
<div style="text-align:center; height:300px; width:50%;" id="header2">
<div class="right" id="header-content2">
<p>this is a test</p>
</div>
</div>