I have a very simple structure:
<div class="parent">
<h1>Element taking space</h1>
<div class="stretch">
Not much content, but needs to be stretched to the end.
</div>
</div>
The parent div has a set height, and I want div.stretch to stretch all the way to that height, regardless of how little content it has. Using height: 100% does the trick, until you add some other element which pushes the content down.
I guess that specifying height: 100% means that the element should have the exact same absolute/computed height as the parent element, and not the remainder of the height after all the other elements have been computed.
Setting overflow: hidden obviously hides the overflowing content, but that's not an option for me.
Is there any way I can achieve that in pure CSS?
Demo of my problem
In the time since this question was asked and answered, a better way to achieve this has come into existence: flex-box.
Just set the parent's display to "flex" and flex-direction to "column", and set the "stretchy" child's height to "inherit". The child will inherit a height of however many pixels are left over to fill up its parent.
In the following example, lines marked /* important */ are part of the actual solution; the rest of the CSS is just to make it visually easier to understand.
.parent {
display: flex; /* important */
flex-direction: column; /* important */
height: 150px;
border: 6px solid green;
}
h1 {
background: blue;
margin: 0px;
height: 90px
}
.stretch {
background: red;
height: inherit; /* important */
}
<div class="parent">
<h1>Element taking space</h1>
<div class="stretch">
Not much content, but needs to be stretched to the end.
</div>
</div>
You could float the h1 element. It would work no matter what height it is, and the content of the stretch element will be pushed below it. But I'm not entirely sure if this is what you are looking for.
EDIT: I'm not certain what kind of browser support you're looking for, but you could also set the display to table on .parent and then have .stretch inherit the height. Then you can nest the column divs inside of .stretch and float them.
Updated: http://jsbin.com/oluyin/2/edit
HTML
<div class="parent">
<h1>Element taking space</h1>
<div class="stretch">
<div class="col">Not much content, but needs to be stretched to the end.</div>
<div class="col">Not much content, but needs to be stretched to the end.</div>
</div>
</div>
CSS
.parent {
display: table;
}
.stretch {
height: inherit;
}
.col {
float: left;
width: 50%;
}
If you know the height of your H1 you can do this to fill out the child:
.parent {
background-color: #eee;
border: 1px solid black;
width: 300px;
height: 600px;
position:relative;
}
h1 { Height: 100px; }
.stretch
{
background-color:#dddddd;
position: absolute;
left: 0;
width: 100%;
top: 100px;
bottom: 0;
}
Example: http://jsbin.com/apocuh/1/edit
If you don't know the height of H1, I'm afraid you will probably need to use JavaScript or thgaskell's method.
Take a look at this post for more information, and an example with JS: CSS: height- fill out rest of div?
Maybe using display:table properties fits your needs ?
Edit: This answer actually looks like thgaskell's one, but instead of using floats I use table-row and table-cell display, and it seems to achieve what you are looking for.
Here is the jsfiddle : http://jsbin.com/ebojok/17/edit
.parent {
background-color: #eee;
border: 1px solid black;
width: 600px;
height: 600px;
display:table;
}
h1{
display:table-row;
width:100%;
}
.stretch{
vertical-align:top;
display:table-cell;
height:100%;
background-color: #ddd;
}
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
</head>
<body>
<div class="parent">
<h1>Element taking space</h1>
<div class="stretch">Not much content, but needs to be stretched to the end.</div>
</div>
</body>
</html>
CSS
.parent {
background-color: #eee;
border: 1px solid black;
width: 300px;
height: 600px;
position:relative;
}
.stretch {
background-color: #ddd;
height: 100%;
position: absolute;
top: 0;
}
http://jsbin.com/amesox/1/edit
This will cover your h1 element as the .stretched goes over it. You could get around this by using z-index: 1; on your h1 element, but I'd advise against it if you want text in your .stretched element.
You need position:relative; on your parent div to give position: absolute something to 'hook on' to. absolute positioned elements, ignore other elements and are placed on top of them unless their z-index is higher or they are its children.
Related
I need to define a div that is preceded by any number of elements with arbitrary height, but it should fill the remaining space until the bottom of the fold.
The way I thought about doing this is to position the top with relative and the bottom with absolute, but I'm not sure if that's even possible in CSS.
#header {
border: 1px solid green;
width: 100%;
height: 100px;
}
#fill-the-fold {
border: 1px solid red;
position: absolute;
height: auto;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
<div id="header"></div>
<div id="fill-the-fold"></div>
Basically, I want the red container to start below the green and fill the space to the bottom of the page.
Any help on how to accomplish that, or if there's any easier way to go about it, much appreciated.
This is answered here.
In short - use flexbox if you can. Key items:
you'll need a flexbox wrapper around your 2 divs, with flex-direction: column
add flex-grow: 1 to #fill-the-fold.
Another possibility I couldn't see mentioned in the link above is to oversize the second div and chop off the bottom with a wrapper - fiddle. This is obviously only good when you don't mind losing the bottom of your second div.
You can reach your purpose by applying margin trick.
JSFiddle
HTML:
<div id="header"></div>
<div id="fill-the-fold">
<div id="content">
</div>
</div>
CSS:
html,body{ margin:0px; height:100%;}
div{
box-sizing: border-box;
}
#header {
border: 1px solid green;
width: 100%;
height: 100px;
}
#fill-the-fold {
margin-top: -100px; /* shifting it covers head */
padding-top: 100px; /* shifting the content under the head */
height: 100%;
}
#content{
border: 1px solid red;
height: 100%;
}
Append your red-border part after the head, and shifting it by negative margin. Then write your real content in the inner one.
I'm having trouble because I have a div I want to center and what I have
usually been told to do is this:
width: 700px;
margin-left: auto;
margin-right: auto;
the trouble is, this is for if you want the div to be a fixed width. I want the div
to adjust its size based on the text in the div, and still be centered. I tried:
width: auto;
margin-left: auto;
margin-right: auto;
but this didn't work. It stretches the div to fill up the screen when I do this.
Anyone know what to do here?
for parent block or body - text-align:center;
for centerd block- display:inline-block;
.center {
display: inline-block;
background: red;
}
body {
text-align: center;
}
<div class="center">
<p contenteditable="true"> write text </p>
</div>
DEMO http://jsfiddle.net/RXP4F/
Content Editable MDN
have you tried the approach shown here?
http://www.tightcss.com/centering/center_variable_width.htm
basically.
put your content inside a floated div
put that floated div within another floated div
put left: 50%, position relative on outer div
put left: -50%, position relative on inner div
finally, nest everything in one more div with overflow:hidden
.outermost-div{
background-color: blue;
overflow:hidden;
}
.inner-div{
float:left;
left:50%;
background-color: yellow;
position: relative;
}
.centerthisdiv {
position:relative;
left: -50%;
background-color: green;
float:right;
width:auto;
}
here is my jsfiddle demonstration:
http://jsfiddle.net/wbhyX/1/
Use margin:
0px auto; and display: table;
There are example:
https://jsfiddle.net/da8p4zdr/
You might want to try CSS display:table-cell or display:table
Try this structure.
<div class="container">
<div class="center_div">
</div>
</div>
.container{
float: left;
left: 50%;
position: relative;
}
.center_div{
position: relative;
left: -50%;
float: left;
}
zloctb's answer on Aug 30 '13 at 4:14 actually worked in principle but was incomplete. If you want your element width to be 'auto' based on the contents within it AND centered within its parent BUT with the contents inside the CHILD element left-aligned, do the following (because it really is the simplest way):
.parent {
width: 100%;
text-align: center;
}
.parent div.child {
display: inline-block;
text-align: left;
width: auto;
}
(Obviously, if you just wanted everything strictly centered, you would not need the code for the child element.)
EDITED:
use table, it could be easier to style. Then add div into the tr
.outer-container {
position: relative;
left: 50%;
float: left;
clear: both;
margin: 10px 0;
text-align: left;
}
.inner-container {
background: red;
position: relative;
left: -50%;
text-align: left;
}
Centering an element horizontally can get a little weird, as the functionality isn't very intuitive. Really, you need to play games with text-align:center; and margin:auto, and you'll need to know when to use which.
For example, if I want to center the contents of an element (raw-text), including buttons and inputs, I can use text-align:center.
.text-center {
text-align:center;
}
<div class="text-center" style="border:1px dashed blue;padding:6px;" >
My contents are centered! That includes my <input placeholder="inputs" /> and my <button>buttons.</button>
</div>
If we add other elements to our container, those elements will have their width forced to 100%. This helps us emulate that it is centered because technically, at 100%, it is centered! Silly, isn't it?
.text-center {
text-align:center;
}
<div class="text-center" style="border:1px dashed blue;padding:6px;" >
My contents are centered! That includes my <input placeholder="inputs" /> and my <button>buttons.</button>
<p style="background-color:orange;width:auto" >Even though my width is explicitly defined as "auto," I still have 100% width! What gives?!</p>
</div>
If your width property IS defined though, then you can use the margin: auto style to center it within the parent.
<div style="margin:auto;border:1px solid black;width:300px;" >
I am centered!
</div>
You need to determine which solution is best for you. I wish I could help more, but it is hard to know what solution will best fit your needs when you haven't provided the HTML for you problem!
Either way, I hope this JSFiddle helps clear things up!
I'm stuck with this problem:
I have a div (#container) which contains two divs. The height of the container should be exact 100%, regardless of the content of this div - not less not more.
Inside this div I want two full-width divs on top of each other:
The (#upper) div's content automatically determines its height.
The (#lower) div's content should be scrollable, but only vertically. Its height is dependent on the height of (#upper): 100% - (#upper)height = (#lower)height
Currently I have the following css ...
body {
margin:0;
padding:0;
}
#container
{
position: relative;
width: 500px;
height: 100%;
max-height: 100%;
background-color: #f00;
}
#upper {
width: 100%;
background-color: #0f0;
}
#lower {
width: 100%;
background-color: #00f;
overflow: auto;
}
... as well as this code:
<div id="container">
<div id="upper"></div>
<div id="lower"></div>
</div>
How can the (#container)'s height be exactly 100% - independent of its content? Now the height becomes larger because of the combined content of (#upper) and (#lower)?
How can (#lower) be scrollable (only up and down, not left to right!)?
Thank you very much for your feedback, I hope we can all learn from this.
You should set your html and body elements to have a height of 100%, so your children divs know what to base the percentage off of. Like so:
html, body {
height:100%;
width:100%;
}
Change your container to this:
#container
{
width: 500px;
height: 100%;
background-color: #f00;
}
As for your scrolling issue, you're almost there. Change the code to the following:
#lower {
width: 100%;
height:100px;
background-color: #00f;
overflow-y: auto;
}
For it to work best, have a fixed height set on your lower div and that'll make it easy for the scrollable action to work best.
EDIT:
I realized I mis-read your question. You'd like to have your lower div fill the remaining height of the window. Here's how to do that in jquery:
var top = $('#upper').height();
var remaining_height = parseInt($(window).height() - top);
$('#lower').height(remaining_height);
I still haven't found a way to do that with only CSS... Sadly.
I think this may help you:
<head>
<title></title>
<style>
.upper{
height:50px;
border: 1px solid groove;
}
.lower{
height:calc(100% - 50px);
border: 1px solid blue;
}
</style>
</head>
<body>
<div style="height:500px; border:1px solid red; position:relative;">
<div class="upper"></div>
<div class="lower"></div>
</div>
</body>
This will take 50px out the lower div
For a pure CSS solution, use display: table-row.
<style>
*{
box-sizing: border-box;
margin:0;padding:0;
}
html, body, #container{
height: 100%;
}
#container{
display: table;
height: 100%;
}
#upper, #lower{
display: table-row;
}
#upper{
height: 100px;
}
</style>
<div id="container">
<div id="upper">bla</div>
<div id="lower">bla</div>
</div>
This solution only works if the height of the content is not more than 100%, see here: https://stackoverflow.com/a/13668087/603569
Here a 100% css alternative:
<div style="height:100%;">
main div
<div style="height:100%;padding-bottom:200px;">
header div
</div>
<div style="position:relative;height:200px;top:-200px;">
footer div
</div>
</div>
Remember that all parent elements, including body and html, must have their height set too.
I feel like this must be an issue of me doing something silly, but I can't figure it out. Here's a demo page showing my problem. The source of the page:
<html>
<head>
<title>demo</title>
<style type='text/css'>
body{
margin: 0px;
padding: 0px;
}
#container{
height: 100%;
background-color: black;
}
#logo{
margin: 25px auto auto auto;
width: 360px;
height: 45px;
background-color: goldenrod;
}
</style>
</head>
<body>
<div id='container'>
<div id='logo'>
<p>logotext.</p>
</div>
</div>
</body>
</html>
So the more you adjust the top value of margin, the further down the page both #logo and #container get dragged. #container should stay put and #logo should be shifting down the page.
This is caused by collapsing margins. If two elements have touching margins, then the margins merge. There is a great explanation of this here. Go to the section called Collapsing Margins Between Parent and Child Elements.
Here are three different solutions.
One is to add overflow: auto to the container. This changes the BCF (Block Formatting Context). This technique is described in more detail here.
#container {
height: 100%;
background-color: black;
/* Add oveflow auto to container */
overflow: auto;
}
http://jsfiddle.net/bzVgV/20/
A second is to use padding on the container instead of a margin on logo. This takes margins out of the equation.
#container {
height: 100%;
background-color: black;
/* Use padding on container instead of margin on logo */
padding-top: 30px;
}
http://jsfiddle.net/bzVgV/18/
A final solution is to make the margins no longer touch. You can do this by adding a 1px padding to the parent.
#container {
height: 100%;
background-color: black;
/* Now margins of container and logo won't touch */
padding-top: 1px;
}
http://jsfiddle.net/bzVgV/21/
I want the top lines of two DIVs (<div></div>) to be aligned horizontally, how to do it?
Steven,
In addition to T. Stone's suggestion to float both divs, a simple way to align two divs is to make both have the display: inline-block; CSS rule and give the lower div the vertical-align: top; CSS rule.
Take a look at this simple jsFiddle example to see how this works.
div {
display: inline-block;
}
div#tall {
height: 4em;
}
div#short {
height: 2em;
vertical-align: top;
}
In response to "is there another way to do it", sure you could use display: inline but you have a bunch of hacks to remember to get it to work in IE6/7. This way is generally better (but it all comes down to the individual circumstances)
<style type="text/css">
.keeper {
overflow: hidden; /* expand to contain floated children */
}
.keeper div {
width: 200px;
height: 30px;
float: left;
border-top: 1px solid red; /* so you can see the 'tops' */
}
</style>
<div class="keeper">
<div>
</div>
<div>
</div>
</div>
Float them in a container.
.parent div { float: left; width: 50%; }
<div class="parent">
<div>1</div>
<div>2</div>
</div>
Note: The sum of the width of the child divs can not be greater than 100% of the parent div, including margin and padding.
Alternative
If maintaining flow with the page isn't a requirement, and all that really matters is aligning, them, the divs can always be positioned absolutely.
.abs { position: absolute; top: 100px; width: 50px; }
.left { left: 0px; }
.right { left: 50px; }
<div class="abs left">1</div>
<div class="abs right">2</div>