How can I vertically align a table in the middle of the screen with css?
Generally something along the lines of this works pretty well in any block element with a defined height.
table {
position: absolute;
top: 50%;
margin-top: -50%;
}
Centering on the page is harder since you don't have a defined height, but I think this works.
html {
height: 100%;
}
You may encounter some browser differences, act accordingly.
Shortly said, just make your body a table, because vertical-align does work on table-cells:
body, html {
height: 100%;
}
body {
display: table;
}
#wrapper {
display: table-cell;
vertical-align: middle;
height: 80%;
}
This will vertical align your pagewrapper to middle and let it be fluid 80%
If you can give the table a fixed height, then feel free to adapt the CSS from this site I've just done.
Bit complicated to explain, but basically you set a 1 pixel high 'horizon' at 50% height of the screen around your content, then offset the top of the element to be centred (i.e. your table) by 50% of its height.
EDIT: Here's the article I originally made my solution from, with explanation & everything.
Related
I've created the following demo to show my issue:
http://francisbaptiste.com/nov17/
Each div is 33.33% wide. Within the div is an image with 100% width. I want it to be a perfect grid of images, but the height of the div is always a little more than the height of the image.
Shouldn't the height of the div be set by the height of the image within it? So why is there that little bit of space at the bottom?
The gap is coming from the actual whitespace after the image tag. You can use this to fix it:
.card img {
display: block;
}
Fiddle
Or a more hacky solution:
.card {
font-size: 0;
}
Fiddle
I thinks the problem is the height of outer div, you cannot use auto since the browser may have some default action for the div and its inside content. Instead, I specify the percentage of height and solved the problem
.card {
width: 33.333%;
height: 50%;
overflow: hidden;
float: left;
background: black;
color: white;
}
Does that make sense to you?
I have two elements, both with display: inline-block, and the parent has white-space: nowrap.
When the screen is resized, the div on the right side don't resize, like this.
I'm trying to make only the blue div resize.
Full source (jsfiddle)
The structure of the html is like this:
<div class="container">
<div class="header">...</div> <!-- red -->
<div class="aside">...</div> <!-- pink -->
<article>...</article> <!-- blue -->
</div>
Relevant css:
* {
box-sizing: border-box;
}
div.container {
margin: 0 auto;
max-width: 40em;
padding: 0;
white-space: nowrap;
}
div.container > * {
white-space: normal;
}
.aside {
display: inline-block;
max-width: 15em;
vertical-align: top;
}
.article {
display: inline-block;
max-width: 25em;
}
Old question, but for the sake of knowledge of anyone who reads this and also has the doubt:
What I've found is that setting position: relative on the .container
and position: absolute on the .article does what I want.
An absolute positioned element is positioned relative to the nearest positioned ancestor, where a positioned element means anything with a position property different to static, the default; if does not found any positioned element, uses the body element.
The absolute positioned elements, if has their width and heigth in auto, resizes to fit its content, and limits the maximun sizes by its positioned ancestor. You can check this putting a short string instead a large one: the element will shrink to the length of text. If you remove the positioning from div.container, the article (if still positioned absolute) will grow (depending on its content) to cover the space between previous element and body width.
And, related to the aforementioned and to add some utility to this delayed answer, a not-very-know bonus: if you define the right and left properties of a absoluted positioned element, and leave the width in auto, the element will cover the horizontal size between the right and left defined. This way you could put something like
article {
background-color: #a0f4ec;
display: inline-block;
position: absolute;
right: 0;
left: 30%;
}
div.aside {
background-color: #faf;
display: inline-block;
max-width: 15em;
width: 30%;
}
This trick also applies in a vertical sense, but with height, top and bottom properties.
There are a few ways to do it.
Method 1:
two divs the same line, one dynamic width, one fixed
Method 2 (negative margins)
http://alistapart.com/article/negativemargins
Unfortunately, Narxx's answers require the divs to be floated. I'm sure that's what you should do if you're building a real site, but in my case, I'm trying not to use it.
What I've found is that setting position: relative on the .container and position: absolute on the .article does what I want.
Simplified fiddle
If anyone can explain why, I'll mark it as an answer.
For whatever reason I am really beating myself up with this... No doubt because of the lack of support for a real "proper" way of vertically centering anything.
The Goal:
Is to have a set of four images, each inside their own responsive columns. Each image has a white overlay, that when hovered reveals more of the image, as well as a title for each of the 4 images that is horizontally and vertically centered inside the image.
I could easily achieve this if I set specific width/heights and stuck the image inside CSS rather than the HTML. For SEO reasons I want the image to be present in the HTML.
Additionally because of the responsive nature, the images must scale to 100% of the width of the column they reside in. Consequently, because the width scales, the height scales as well.
So the first issue is getting the "caption" as I am calling it in my classes, to appear over the top of the image. Easily done with a simple position: absolute; as well as top: 0; and left: 0; on the caption and position: relative; on the container.
The big problem and second issue, is vertically centering the "Gallery 1" text over the top of the image. I have to use the position: absolute; bit as I mentioned above just to get the text over-top of the image. From there I can't manage to get a display: table; solution to work, nor a -50% margin solution to work.
Here is a JS Fiddle
My HTML:
<div class="container">
<img src="http://lorempixel.com/output/city-q-c-640-480-8.jpg" />
<div class="caption">
Gallery 1
</div>
</div>
Any ideas on how to achieve this? I would like to stay at least IE8 supported, and I am using selectivizr already, so pseudo-classes don't bother me.
First, I wasn't sure about what you mean exactly. But as you mentioned:
The issue is centering the text Gallery 1 vertically over the top of the image. Centering it horizontally is easy with a simple text-align but centering it vertically is what is eluding me.
Here is my attempt to align the text vertically over the image. Actually the concept comes from this approach of a similar topic on SO:
.container { position: relative; }
.container img {
vertical-align: bottom; /* Remove the gap at the bottom of inline image */
max-width: 100%;
}
.caption {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
font: 0/0 a; /* Remove the gap between inline(-block) elements */
}
.caption:before {
content: ' ';
display: inline-block;
height: 100%;
vertical-align: middle;
}
.caption a {
font: 16px/1 Arial, sans-serif; /* Reset the font property */
display: inline-block;
vertical-align: middle;
text-align:center;
background: rgba(255, 255, 255, 0.75);
width: 100%;
padding: 1% 0; /* Added a relative padding for the demo */
}
WORKING DEMO.
This relies on CSS2.1 and it will definitely work on IE8+ (excluding rgba()).
If I understand your issue correctly, this may work for you:
Working Demo
If you need the image to scale when hovered over, then simply adding a :hover on the container and changing it's width should work.
CSS:
.container {
// existing styles
-webkit-transition: all .2s; // needs prefixes for other browsers.
}
.container:hover {
width: 500px;
}
The only issue is that transition has no support for IE9 or earlier. So you'd need to go a JS route if that is an issue.
I'm looking to center text both vertically and horizontally over an image that grows when the page gets wider.
I originally had the image set as the background for a div of fixed height, in which case it was relatively easy to center it, but because background images aren't structural, I couldn't set the height to be an automatic function of the width, and I had to toss this option out when I went for a more responsive design.
So I've currently got a div with two elements in it, img and overlay text. The image width is set to 100% of the width of its container, and the height varies accordingly. As a consequence, though, I can't set the overlay text to be postion:absolute and top:80px or something, because the distance from the top will have to vary. And even doing top:25% or whatever doesn't work, because a) if that page width shrinks to squeeze the text, or if there's just more text, the vertical centering is thrown off when there are more/less lines, and b) the percentage is arbitrary -- it's not 50 or something, because that would put the top of the text overlay 50% down the image, when I want the center of the overlay to be there.
I've looked, among other things, at this post, which is definitely close -- but in both solutions, the image height is incapable of resizing, and in the former, the JS loads at page load, but then freezes, so that if I change page width/height, things get out of whack. Ideally, this solution wouldn't involve JS for just that reason (even if it reloaded on every resize, that feels non-ideal), but if that's the only solution, I'll take it.
Also, just for added details/fun, I've set a max-height on the image, because I don't want it to exceed roughly 300px height, even on a cinema display.
Basic fiddle of current attempt here, and identical code below. Any ideas? Thanks!
html
<div class='quotation_div'>
<img src='http://www.mountainprofessor.com/images/mount-ranier-mount-features-2.jpg'>
<div class='overlay'>
<p>Any reasonable amount of text should be able to go here. I want it to be able to center vertically even if it takes up 2 or 3 lines.</p>
</div>
</div>
css
.quotation_div {
position: relative;
display: table;
}
img {
width: 100%;
max-height: 300px;
}
.overlay {
z-index: 99;
width: 70%;
margin-left: 15%;
vertical-align: middle;
position: absolute;
top: 25%; /* Obvious problem, cause it's arbitrary */
}
p {
text-align: center;
color: red;
font-size: 165%;
font-weight: lighter;
line-height: 2;
}
You can use CSS background-size to set the width to 100% and the height will be calculated to maintain aspect ratio.
Here's a fiddle using that technique.
If you want the image as an HTML element then I suggest you set it's position to absolute and use the same method of disply:table-cell to center the overlay:
Here's a fiddle using that method, this one stretches the image because of the max-height.
Please Try the below css for .overlay as in your fiddle
.overlay {
z-index: 99;
width: 70%;
/* height: 100%; */
/* margin-left: 15%; */
/* vertical-align: middle; */
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
}
or this is the updated fiddle link http://jsfiddle.net/hLdbZ/284/
I use this combination:
.CONTAINER {
position: relative;
text-align: center;
}
.TEXT {
text-align: center;
position: absolute;
top: 50%;
left: 0;
right: 0;
}
.IMG {
//for responsive image
width: 100%;
height: auto;
}
I just added to the html
<div align="center"></div>
to surround your existing code to get the image to center
hope that helps
I'm trying to think of a clever way to deal with a part of a webpage where the image is going to be swapped out with different images (of varying widths, max being 620px wide), and a text caption is absolutely positioned over it. I want the text to absolutely position based on the width of the image rather than the width of the relatively positioned container.
I was thinking maybe something with background-image, rather than an image itself, but then I have to deal with the fact that it's an empty div with a background image, so I'd have to hardcode a height, which wouldn't work since some of these images would be taller than others.
Any solutions you guys can think of would be greatly appreciated. Thanks!
I'm not sure if I'm following 100%, but here's how to do what I think you're trying to do.
Create your container with position relative, set your widths and heights, and set overflow to hidden:
.container-outer {
position: relative;
width: 200px;
height: 200px;
overflow: hidden;
}
Next, create an inner container inside of it that simply has position: absolute
.container-inner {
position: absolute;
}
Finally, create your overlay text style to be 100% width and center horizontally (or however you want it to be positioned)
.overlay {
position: absolute;
text-align: center;
width: 100%;
margin: 0;
}
Here's the jsfiddle with an example: http://jsfiddle.net/BGvca/1/
Good luck!
I raise the previous answer with some more CSS
<div class="imageholder">
<div class="caption">Simon & Garfunkel</div>
<img src="http://greenobles.com/data_images/simon-and-garfunkel/simon-and-garfunkel-03.jpg">
</div>
.imageholder{
position: relative;
float: left;
}
.caption{
position: absolute;
top: 0;
left: 0;
right: 0;
font-family: Helvetica,sans-serif;
font-size: 1em;
background: rgba(0,0,0,0.5);
color: #fff;
padding: 1em 2em;
}
See the jsFiddle for reference.
If you make the div containing the image inline-block, its width will scale to the size of its content, ie your image.
Once the container is sizing correctly, you can center other child elements, like your caption, inside it using a wrapper with text-align: center, or no wrapper and value of auto for the left and right margins.
Here's an example: http://jsbin.com/uyajaw/3/edit (with ugly borders and backgrounds to show where stuff is)
Click the image to resize it and see the caption still centered.
Note that if your caption is likely to be larger than your image, it will probably expand the width of the container div, throwing off the center alignment. You can avoid this by making the setting position: absolute; left: 0; right: 0; on the caption, or by giving it a width that you know will always be smaller than your image.
I don't know if I'm over-thinking this, but here's a way to do it. If you specifically don't want to align the caption with the wrapper div, then you'll need to also account for the imagesLoaded event (jQuery plugin). Otherwise, you will either have an img width of 0 if not loaded, or you'll have the previously loaded img width in there (unless you go back to it).
Take a look at this Fiddle that shows a fixed width wrapper div and the caption centered on it.