Keep aspect ratio of vertical aligned image in flex box - css

img{
max-height: 100%;
max-width: 100%;
width: auto;
height: auto;
}
The full code can be seen here: http://jsfiddle.net/ZSSVt/
I want the image to "auto-fit" inside its div container, like here: http://jsfiddle.net/y4Y3S/ (but vertically aligned).
Right now the kitten gets squished when the image is resized. How to fix that?

updated jsFiddle
Try wrapping the image in another div. <img> elements behave differently than <div> elements when width and height are applied.
For example width: 100% applied to <img> means that the image element will have the same width as the source picture. If you apply width: 100% to <div>, it would have the same width as the first parent with defined width.
Thus, your desired html will be:
<div class='box'>
<div class='wrapper'>
<img src="http://placekitten.com/g/200/300" />
</div>
</div>
With corresponding css for wrapper div:
div.wrapper {max-height:100%;}

Related

Equally distribute 3 divs within a div - without float

I have been reading widely about this but haven't been able to solve it to my satisfaction.
I have a div (<section>) that contains one <p> and 3 <div>s. I would like to distribute the 3 divs equally in one line so that the left border of the 1st div is on the left border of the document (<body>) and the the right border of the 3rd div on the right border of the document.
I don't want to use float because the backround-color would vanish.
I have tried flex but justify-content did not yield the expected outcome.
Here's the code on JSBIN.
Thank you!
You can use display: flex on the container, and set the width of the three div elements to take up one third (or as close as we can get) of its container. The container must have a set width (either pixel or percentage) for it to work.
#container {
display: flex;
height: 600px;
width: 600px;
background-color: lightgreen;
}
#container div {
border: 1px solid black;
margin: 0 10px;
width: 33.333333%;
}
#container div img {
width: 100%;
}
<div id="container">
<div id="content1">
I'm some content. Regardless of the width of this div, the content will move to the next line and stay within the div instead of overflowing.
<img src="http://i.imgur.com/P8z2H80.jpg">
</div>
<div id="content2">
I'm some more content. Regardless of the width of this div, the content will move to the next line and stay within the div instead of overflowing.
<img src="http://i.imgur.com/NfnBZAI.jpg">
</div>
<div id="content3">
I'm even more content. Regardless of the width of this div, the content will move to the next line and stay within the div instead of overflowing.
<img src="http://i.imgur.com/W8M37N2.jpg">
</div>
</div>

body background extends into margins or is cut-off when scrolling

I have a layout where I need to use height: 100% on html and body (and any wrapper divs I resort to using) to achieve an effect similar to pages, so that the content on my first "page" is centred, scrolling down the content on the second "page" is centred etc.
The html looks like this:
<section class="page" id="p01">
<div class="spacer">
</div>
<div class="outer">
<div class="inner">
Some content
</div>
<div class="inner">
Some content
</div>
</div>
</section>
<section class="page" id="p02">
<div class="spacer">
</div>
<div class="outer">
<div class="inner">
Some content
</div>
<div class="inner">
Some content
</div>
</div>
</section>
and the vertical centring etc. achieved with this styling:
body, .page {height: 100%; margin: 0 auto;}
.spacer {
float: left;
height: 50%;
margin-bottom: -150px;
}
.outer {
height: 300px;
width: 100%;
background-color: #fca;
clear: both;
position: relative;
display: block;
white-space: nowrap;
}
.inner {
width: 41%;
margin: 0 6%;
height: 300px;
background-color: green;
display: inline-block;
vertical-align: middle;
white-space: normal;
}
.inner:first-child {
margin-right: 0;
}
You can see it at work in this fiddle:
http://jsfiddle.net/terraling/3V5rV/
The problem is the body background (here I'm just using color, but on my site it will be an image) leaks out into the body margins, i.e. the body content has a max-width and should be centred with white margins.
I can fix that either by... setting html background-color to white, as per
http://jsfiddle.net/terraling/yM53t/
...but body background becomes cutoff when scrolling into the second page (that wasn't a problem in the first fiddle).
Alternatively I could set the background image on a wrapper div and not on the body. That solves the problem of it leaking into the body margins, but it still has the same problem that it is cut off on scrolling.
(see: http://jsfiddle.net/terraling/3V5rV/1/ )
Any solution that involves removing the height: 100% declaration from any of html, body or wrapper collapses the layout (including replacing with max-height: 100%).
There's a whole lot of problems with this construct and not all of them can be solved, unfortunately.
The background issue
As you have seen yourself the background of body extends to the viewport if html does not have a background. That's solvable.
The float issue
When an element floats it does not contribute to the height of its parent element. So they don't grow (e.g. body does not expand). That can be solved if you can use alternatives. For vertically centering an element you could use display: table-cell e.g., which allows you to vertically center the content.
The height issue
This is where all hope is gone. height: 100% refers to the height of the parent, of course. The parent of body is html which in turn is the child of the viewport. You gave html the size of 100% (= the size of the viewport) and body the size of 100% (= size of html = size of viewport).
So now body has a fixed height and it can't expand meaning the background doesn't expand as well. Now one might have the idea to give body no size so that it can expand. But .page has 100% too. If a parent (in this case body) has no fixed size 100% has no meaning and will be treated as auto, which means as big as the content. And the content has a height of 300px. So the .page elements wouild no longer have the height of the viewport but 300px.
As for the collapse of the CSS, you should either specify the height specifically height:200px; or add padding to the bottom/top of the page so that the content wraps. You can also use min-height:200px; then add the margin-bottom:20px; to separate the pages. I would approach this at a specific height with the wrapper having the specific background-image and bottom-margin.
In order to center your background-image to the <html> you can specify the position as 50%.
This can be done by doing background:url('yourimage.jpg') repeat 0 50%;This will ensure the background is centered.

Center text in fixed height div

I want to center some text in a fixed height div.
I've made the following fiddle
<div style="height:180px;border:1px solid black;vertical-align:middle;">
<h1 style="vertical-align:middle;">Contact</h1>
</div>
<div style="height:180px;border:1px solid black;vertical-align:middle;">
<h2>Welcome to the</h2>
<h1>AAA</h1>
<h4>system</h4>
</div>
I've tried various options of the vertical-align:middle applying it to the different elements but it doesn't seem to work.
I did see other questions where the line-height was set to the same height as the font-size but in the second example I have multiple lines of text at different heights.
Is there a good way to do this?
Used to display table-cell
as like this
.parent{
height:180px;border:1px solid black;vertical-align:middle;
display:table-cell;
}
Demo
Don't use to inline css write a class in external css and define css
Vertical alignment always comes with some trouble. You should apply that css property only to table (td) elements and inline elements, not block elements like divs.
To position something in the middle you can use very simple solution - by using absolute positioning.
Create child block and set it's position to absolute, move it 50% from top, and set margin-top to negative value with amout equal to half of parent's height. Set your parents position to relative.
#parent {
position: relative;
height: 180px;
}
#child {
position: absolute;
top: 50%;
margin-top: -90px;
}
<div id="parent">
<div id="child">
<h1>sample</h1>
<h2>sample</h2>
</div>
</div>

How to adjust height of right div using css

I have 2 columns of divs (left and right) contained in the parent div. I want the parent div height automatically adjusts when either left or right div height expand. The problem I have now is that the height of parent div just expands when the left expand, it does not work for the right. I have height:auto for all divs.
Are there anyone have solution?
you can do this by float for example
<div class="parent" style="float:left">
<div class="child" style="float:left"></div>
<div class="child" style="float:left"></div>
</div>
You are probably using float to move the right div to the right side. Floats do not automatically adjust the parents height, you must add the following code right before the end of the parent div.
<br style="clear:both;" />
This will mark the end of all floats on the same level.
You are probably floating your divs to keep them next to each other. By doing so, you 'remove these divs from the flow', i.e. the parent does not take them as content anymore.
You can 'by-pass' this effect by giving overflow: hidden to the parent or by adding a clear div.
Example w/ overflow: http://jsfiddle.net/BramVanroy/LJTGh/
Important CSS:
#wrapper {
height: auto;
width: 77%;
margin: 20px auto;
overflow: hidden; /*THIS IS IMPORTANT */
border: 1px solid;
}
OR
Example w/ clear: http://jsfiddle.net/BramVanroy/LJTGh/1/
Important CSS:
.clear {clear: both;}
​
The first option needs a line more of CSS, the second one a line more of HTML and a line more of CSS.

Dynamic height increase of one div with respect another div

I have two divs. These two divs are orientated as two vertical columns next to each other. Instead of pre-determining the height of the divs via css I want to have it grow dynamically with the content I put into it. Which is simple enough for one div but my problem is that I want the div on the left with background color green to grow to the same height of the div on the right . There is always going to be more content in the right than in left.
Assuming the elements are after body. Give 100% to the body, and all the div
body, #div1, #div2 { height: 100%; }
If they are not, then you have to either fix the height of the parent or chain 100% height all the way to the body again.
#parent { height: 800px; }
#div1,#div2 { height: 100%; }
Enclose those divs in a parent div, and set their height to 100%.
You simply need a three-column (X)HTML + CSS Layout.
It's here
Let insert a parent div (container of those two adjacent divs)
add a property 'display: flex;' to the parent div
.parent{
display: flex;
}
.child1, .child2{
padding: 10px;
border: 1px solid gray;
}
<body>
<div class="parent">
<div class="child1">
CHILD 1 AREA<br />
CHILD 1 AREA
</div>
<div class="child2">
CHILD 2 AREA
</div>
</div>
</body>

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