This is yet another question about centering vertically in a div, but I've tried lots of the solutions discussed in other answers to no avail.
Here's an example of the code to play with: https://codesandbox.io/s/z2qzxwk99x
The arrow-icon is centering vertically in the viewport, instead of the viewer-wrapper div. As such, it drops off of the image completely, instead of staying centered vertically, if you make the page very narrow.
.viewer-wrapper {
background-color: #1b8dbb;
position: relative;
}
.arrow-wrap {
position: absolute;
max-height: 100%;
line-height: 95vh;
background-color: #4cae4c;
margin: auto;
opacity: .9;
left: 0px
}
.arrow-icon {
background-color: orangered;
}
.comic-page {
object-fit: contain;
max-height: 95vh;
width: 100%;
}
<div className="viewer-wrapper">
<div className="arrow-wrap">
<LeftArrow className="arrow-icon" size={75} />
</div>
<img className="comic-page"
src="http://assets-production.rovio.com/s3fs-public/hatchlings_0.jpg"
about="This is an image"
/>
</div>
The magic here is Flexbox (and Grids, but Flexbox has way better browser support). Keeping the same HTML layout, you could use somerthig like:
.viewer-wrapper {
background-color: #1b8dbb;
display: flex;
align-items: flex-start;
}
.arrow-wrap {
background-color: #4cae4c;
margin: auto;
opacity: .9;
}
.arrow-icon {
background-color: orangered;
}
.comic-page {
object-fit:contain;
min-height: 100%;
max-width: 100%;
}
Depending on how much support you need of IE, there are different ways to accomplish vertical alignment.
If you don't have any need to support IE, you could use the flex display property:
.viewer-wrapper{
display: flex;
align-items: center;
}
or, continue with what it looks like you're trying to do. What your missing to do so is the top: property. Since you've already correctly made the parent element position: relative, setting top: 50% will set your arrow to begin halfway down the viewer-wrapper element. From here you need to set a negative margin to correct for the arrow's height. Since it looks like you specify a size of 75(px?), you can achieve this like:
.arrow-wrap {
position: absolute;
background-color: #4cae4c;
margin-top: -37.5px;
left: 0px;
}
You shouldn't have to set any other margins.
A great resource for this, and what I used to help answer you, is howtocenterincss.com.
Related
I am not able to position an image within a div so that:
it's higher than the div and sticks out
starts at the very bottom of the div (there is a small gap that I can't close)
This is the relevant HTML:
<div class="teaser-image-wrapper">
<div class="wrap">
<img class="image2 more-height" src="images/svg/creativeyou.svg" alt="Creative You! Title Image">
</div>
</div>
And the CSS I have:
.teaser-image-wrapper {
background-color: #83ffcd;
width: 100% !important;
margin:
}
.wrap {
width: 80%;
}
.teaser-image-wrapper img {
padding: 0 !important;
object-fit: contain;
max-height: 75vh;
max-width: 100%;
line-height: 0;
}
Here is an image for reference: The greenish background of the wrapper (.teaser-image-wrapper) should be lower than the image (svg) that should stick out on the top. Also, notice the little gap at the bottom.
Thank you for any hints
The easiest way to achieve something like this could be to use position absolute and relative. Maybe try setting the class wrap to relative and the image absolute, with
left:0;
right:0;
bottom:0;
and then play around with the position of 'top', can then set a height of the wrap class to try and achieve the desired effect. May be better ways to do this but without playing about with it this is what is off the top of my head. hope this helps
OK, after some tinkering solved it.
I wanted to achieve this:
This is the CSS. I basically push the wrapper - div down while pulling the image inside up.
.teaser-image-wrapper {
max-width: 80%;
margin: 40vh 10% 0;
padding: 0;
line-height: 0;
}
.wrap {
width: 100%;
background-color: #83ffcd;
height: 50vh;
margin-top: 25vh;
}
.teaser-image-wrapper img {
padding: 0 !important;
object-fit: cover;
height: 75vh;
width: 100%;
line-height: 0;
position: relative;
margin-top: -25vh;
}
One very common question on CSS is how to vertically center an element. With CSS3 being able to do so many special effect, why they are not including the vertically center function into CSS3?
I don't believe it is a difficult function to add if even a beginner developer can make a function to center things with javascript. And with so many hacks for different situations, it is clear that with CSS alone it is possible to center things vertically. So maybe there are other reasons that they decide not to make it a standard property?
That is because how layout is performed with CSS — CSS is predominantly arranging items on the x-axis, like how 100% width works as expected but not 100% height. This is likely due to the possible "calculation/logic loop" that happens as width is dependent on height and vice versa, so one axis must always be prioritized when it comes to calculation.
Extra info by #BoltClock:
The x-axis thing has to do with the natural flow of text in a
document. Remember that the Web started off as a series of pages, so
HTML and CSS were originally built around this fundamental premise -
it has since evolved into an application platform, but the legacy is
still there. Flexbox is the CSS3 way to vertically center boxes - the
only issue is cross-browser support, but since the question is about
CSS3 anyway, that's to be expected.
Similarly, in terms of dictating alignment, horizontal alignment is easy because the width of an element is often implicitly or explicitly stated, like how a block element automatically has a implicit width of 100% unless otherwise stated, allowing for easy calculation of a center position along the horizontal axis.
However, this does not work for the case of vertical alignment, where often than not the vertical dimension is dependent on the amount, length and size of the content. In the case where vertical height is explicitly stated, this can actually be easily done:
by using the CSS flexbox method
The good: standards compliant and very simple, dimension of element of interest does not have to be fixed
The bad: lack of extensive cross-browser support, but appears very promising today
body {
margin: 0;
padding: 0;
}
.box {
background-color: #eee;
display: flex;
align-items: center;
justify-content: center;
width: 100%;
height: 100vh;
}
.box > .content {
background-color: #333;
color: #eee;
padding: 1em 2em;
}
<div class="box">
<div class="content">I am centered</div>
</div>
by using absolute positioning and CSS transforms
The good: extensive cross-browser support, dimension of element of interest does not have to be fixed
The bad: fuzzy text rendering (occasionally) due to sub-pixel translation
body {
margin: 0;
padding: 0;
}
.box {
background-color: #eee;
position: relatve;
width: 100%;
height: 100vh;
}
.box > .content {
background-color: #333;
color: #eee;
padding: 1em 2em;
position: absolute;
top: 50%;
left: 50%;
-webkit-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
}
<div class="box">
<div class="content">I am centered</div>
</div>
by using absolute positioning and negative margins
The good: extremely straightforward
The bad: dimension of element of interest MUST be fixed
body {
margin: 0;
padding: 0;
}
.box {
background-color: #eee;
position: relative;
width: 100%;
height: 100vh;
}
.box > .content {
background-color: #333;
color: #eee;
width: 200px;
height: 100px;
position: absolute;
top: 50%;
left: 50%;
margin-top: -50px;
margin-left: -100px;
}
<div class="box">
<div class="content">I am centered</div>
</div>
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/
Jsfiddle to demonstrate my issue.
I have a SPA (Single Page Application).
In the appliation several dialogs can popup on the screen.
Every popup has it own width and height.
The title and content of the dialogs are added by angularJs
The problem i have here is the size of the dialog.
Currently all popups are made and added seperatly. I want to change this into one popup with variable content. The problem that comes with this is that the popup must wrap the contents width.
Example (as shown in the Jsfiddle)
<div class="dialog">
<div class="titlebar"></div>
<div class="content">
The content that is added has css that tells it has a width of 400px
This means the dialog needs to wrap to this 400px
</div>
</div>
How do i solve this by only using CSS?
Some examples of the variation of popups (although the width of both look the same, this is not the case)
Use display:table for the dialog.
Here is your Updated Fiddle.
For young browser you may use :
1) display:flex; property (includes centering) DEMO
.backdrop {
position: fixed;
top:0;
}
.backdrop {
width: 100%;
height: 100%;
z-index: 100;
background-color: rgba(0, 0, 0, 0.2);
display: flex;
align-items: center;
justify-content: center;
}
.dialog {
margin:auto;
position:relative;
}
2) max-content as value for width and not set any width to inner
content . (exept some padding to keep room for the close button) :
DEMO
Info on W3C about those new keywords value, soon avalaible i hope.
CSS updated
.dialog {
width: max-content;
z-index: 101;
margin: auto;
/* basic way t o center */
top:50%;
left:50%;
margin:-80px -150px;
}
.titlebar {
height: 50px;
line-height: 50px;
background-color: #000000;
border-radius: 10px 10px 0px 0px;
}
.title{
color:#FFFFFF;
font-size: x-large;
padding:0 50px 0 10px;
}
.close_button {
position: absolute;
right: 0px;
top: 0px;
line-height:30px;
padding: 5px;
margin: 5px;
border-radius: 10px;
background-color: #ffd549;
color: #000000;
}
.content {
background-color: #FFFFFF;
}
.content-width {
background-color:#FFF000;
}
or as already said , use the display: table, inline-table
Using display: inline-block; text-align: center;
Works in ie >= 8.
Fiddle.
I don't understand the problem.
If you want to center the content-width div element, simply add margin: auto;.
If you want the container to fit the WIDTH of its content, you must change the display property from block to something else, like inline-block or table (as suggested by #jacelysh).
What is it exactly that you are trying to do?
A div without a set width will take up the width of the parent.
try this.
.content {
background-color: #FFFFFF;
min-width: 100%;
}
.content-width {
width: 100%;
background-color:#FFF000;
}
http://jsfiddle.net/VQA4k/6/
Checking again now. You can just remove the width from those two classes and it will work.
This is what you want I think.
http://jsfiddle.net/VQA4k/16/
I want to have a site that is 100% of the height of the browser at all times, with the width scaling with an aspect ratio when the height is changed.
I can achieve this using the new vh unit: http://jsbin.com/AmAZaDA/3 (resize browser height)
<body>
<div></div>
</body>
html, body {
height: 100%;
width: 100%;
margin: 0;
}
div {
height: 100%;
width: 130vh;
margin: 0 auto;
background: #f0f;
}
However, I worry about fallback for IE8 and Safari, as it this unit is not supported there.
Are there any other CSS only methods of achieving this effect?
I have a solution that works also with IE8 (using Pure CSS 2.1), but not perfectly.
because I need the browser to recalculate things when he get resized, and apparently it doesn't do that unless he has to (and I cant find a way to make him think he has to), so you will have to refresh the page after resizing.
as far as I know, the only element that can scale reserving his ratio is an <img>, so we will use the <img> to our advantage.
SO, we are going to use an image with the ratio that we want (using the services of placehold.it), lets say we want a 13X10 ratio (like in your example), so we'll use <img src="http://placehold.it/13x10" />.
that image will have a fixed height of 100% the body, and now the width of the image scales with respect to the ratio. so the width of the image is 130% height of the body.
that image is enclosed within a div, and that div has inline-block display, so he takes exactly the size of his content. witch is the size you want.
we remove the image from the display by using visibility: hidden; (not display:none; because we need the image to take the space), and we create another absolute div, that will hold the actual content, that will be right above the image (100% width and 100% height of the common container).
That works perfectly when you first initiate the page, but when you resize the page, the browser doesn't always measure the right width and height again, so you'll need to refresh to make that happened.
Here is the complete HTML:
<div class="Scalable">
<img class="Scaler" src="http://placehold.it/13x10" />
<div class="Content"></div>
</div>
and this simple CSS:
html, body, .Content
{
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
body
{
text-align: center;
}
.Scalable
{
position: relative;
display: inline-block;
height: 100%;
}
.Scaler
{
width: auto;
height: 100%;
margin-bottom: -5px;
visibility: hidden;
}
.Content
{
position: absolute;
top: 0;
background-color: black;
}
Here's a Fiddle (don't forget to refresh after resizing)
I recommend you to copy this code to your local machine and try it there rather then within the fiddle.
In this similar SO question a CSS technique was found and explained on this blog entry that allows an element to adjust its height depending on its width. Here is a repost of the code:
HTML:
<div id="container">
<div id="dummy"></div>
<div id="element">
some text
</div>
</div>
CSS:
#container {
display: inline-block;
position: relative;
width: 50%;
}
#dummy {
margin-top: 75%; /* 4:3 aspect ratio */
}
#element {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
background-color: silver /* show me! */
}
Demo Here
If this is sufficient for you, I'd recommend this technique. However, I'm unaware if the technique can be adapted to handle scenarios where you must have an element adjust its width depending on its height.
You can do it with the help of padding on a parent item, because relative padding (even height-wise) is based on the width of the element.
CSS:
.imageContainer {
position: relative;
width: 25%;
padding-bottom: 25%;
float: left;
height: 0;
}
img {
width: 100%;
height: 100%;
position: absolute;
left: 0;
}