Is there anyway for an absolute positioned child to expand to fill its relative positioned parent? (The height of parent is not fixed)
Here is what i did and it is working fine with Firefox and IE7 but not IE6. :(
<div id="parent">
<div id="child1"></div>
</div>
#parent { position: relative; width: 200px; height:100%; background:red }
#child1 { position: absolute; top: 0; left: 200px; height: 100%; background:blue }
That's easy. The trick is setting top: 0px and bottom: 0px at the same time
Here's the working code
html, body {
width: 100%;
height: 100%;
overflow: hidden;
}
#parent {
display: block;
background-color: #ff0;
border: 1px solid #f00;
position: relative;
width: 200px;
height: 100%;
}
#child1 {
background-color: #f00;
display: block;
border: 1px solid #ff0;
position: absolute;
left: 200px;
top: 0px;
bottom: 0px;
}
Check out a working example here http://jsfiddle.net/Qexhh/
If I remember correctly there is a bug with how IE6 handles div height. It will only create the div to the height needed to contain the content within it when height is set to 100%. I would recommend two approaches:
Don't worry about supporting IE6 as it is a dead browser anyway
If that doesn't work, use something like jQuery to get the height of the parent div and then set the child div to that height.
fake it by setting the backgrounds to be the same colour so no-one notices the difference
You can achieve this with setting both the top and bottom attributes of the child.
See how this is done
At the bottom of that article, there is a link to Dean Edwards' IE7 (and IE8) js library that you should include for IE6 visitors. It is a JS library that actually MAKES IE6 behave like IE7 (or 8) when you include it. Sweet!
Dean Edwars' IE7 and 8 JS libraries
As far as I know, there is no way of expanding a parent element around an absolutely positioned child element. By making the child element absolutely positioned your are removing it from the regular flow of page items.
I recently built a 2-column website where the right column was absolutely positioned but the left column was not. If the left column had less content and a smaller height than the right column, the page would cut off the right column since it was absolutely positioned.
In order to resolve this, I had to determine if the height of the right column was greater than the height of the left column and if so set the height of the parent div height to the greater of the two.
Here is my jQuery solution. I'm not much of a coder so feel free to tweak this:
jQuery(function(){
var rightColHeight = jQuery('div.right_column').height();
var leftColHeight = jQuery('div.left_column').height();
if (rightColHeight > leftColHeight){
jQuery('.content_wrap').height(rightColHeight+'px');
}
});
Related
Disclaimer - I understand there exists questions around fixed elements in safari, and fixed elements weren't supported, but now are and so forth. However I can't find a question that addresses this exact question.
Given the simplest of fixed sidebars, something like:
.sidebar {
position: fixed;
top: 10px;
right: 10px;
}
And a relatively long page, with input elements.
When an input element is focused, any fixed element becomes absolute - I understand the why, safari is trying to declutter the viewport - thats fine, but not always appropriate. I ask that I get to choose the best experience for the user (i know best naturally).
So the Question..
Is there any way to leave fixed elements as fixed even when input elements are focused?
I have attempted to do a bit of $(window).on('scroll', magic and position elements manually on scroll, but its quite jittery on the ipad.
Safari has supported position: fixed since at least version 9.2, but if you're seeing difficult issues, you can fully create the fixed position effect by making the document element and body full screen and then using absolute positioning. Scrolling then occurs in some main container element rather than the body. Your "fixed" elements can exist anywhere in the markup using this method.
jsfiddle here
html,
body,
.mainContainer {
height: 100%;
width: 100%;
overflow: hidden;
margin: 0;
}
.mainContainer {
overflow: auto;
}
.fixed {
position: absolute;
bottom: 20px;
left: 20px;
}
In order to achieve the effect you desire you need to change your approach to the layout. Instead of positioning the sidebar with position:fixed you need to use position:absolute within a position:relative container that is set to the height of the viewport within that position:relative container you need another div that uses overflow-y: scroll and -webkit-overflow-scrolling : touch
Caveat: I generally avoid using position fixed on tablet & mobile if possible although the browser support is there, in my experience it'll be janky and javascript solutions leave a lot to be desired, my first response would be to challenge the pattern with the designer. If I'm given designs that include a position fixed element when there are input elements, I'm more likely to seek a design solution than a development one as the focus issues you're describing are difficult to circumvent and maintain a quality user experience.
THE MARKUP:
<div class="outer">
<div class="sidebar">
<ul>
<li>Dummy list nav or something</li>
</ul>
</div>
<div class="container">
<input type="text" />
<!-- I added 10000 inputs here as a demo -->
</div>
</div>
THE CSS:
html,body{
-webkit-overflow-scrolling : touch !important;
overflow: auto !important;
height: 100% !important;
}
.outer {
position: relative;
overflow: hidden;
/* I'm using Viewport Units here for ease, but I would more likely check the height of the viewport with javascript as it has better support*/
height: 100vh;
}
.sidebar {
position: absolute;
top: 10px;
right: 10px;
/*added bg colour for demo */
background: blue;
}
.container {
height: 100vh;
overflow-y: scroll;
-webkit-overflow-scrolling: touch
}
input {
display: block;
}
Here's a CodePen for you to open in your simulator (presentation view):
https://codepen.io/NeilWkz/full/WxqqXj/
Here's the editor view for the code:
https://codepen.io/NeilWkz/pen/WxqqXj
We use the percentage trick on paddings to keep aspect ratio to a div when the user scales his window. Like this:
.div {
background: red;
width: 80%;
margin: 0 auto 10px;
-webkit-box-sizing: border-box;
box-sizing: border-box;
padding-bottom: 20%;
}
Now we would like to be able to set a maximum height to this div. Because the height of the div is determined by the padding on the div we would need the div to be border-boxed. So far so good. When trying to use a min-height on the div, this works. The max-height on this div however does not work for some reason.
.div {
max-height: 60px;
}
I created a fiddle to show you what i mean: http://jsfiddle.net/UxuEB/3/.
Tested this on Chrome, FF and IE. Can somebody tell me what I'm doing wrong or why this doesn't work as expected?
I realize this answer comes incredibly late to the party but I was trying to solve this exact same thing today and this question is the first result in Google. I ended up solving it with the below code so hopefully that will help someone out in the future.
First, add an extra inner div:
<div class="control control-max-height">
<div class="control-max-height-inner">
Max-height
</div>
</div>
And set the padding on that while hiding the overflow on the outer div:
.control {
background: red;
width: 80%;
margin: 0 auto 10px;
-webkit-box-sizing: border-box;
box-sizing: border-box;
}
.control-max-height {
max-height: 120px;
overflow: hidden;
}
.control-max-height-inner {
padding-bottom: 20%;
}
This obviously assumes you're fine with hiding part of the inner element when it overflows. In my case that wasn't a problem because the inner element is just an empty link element to make the whole thing clickable and the outer element just has a centered background image and a border set.
See fiddle: http://jsfiddle.net/UxuEB/7/
The property max-height works on the height of the element and you want to use it on the height and padding-bottom.
I think you are confused by the box-sizing property that it changes the element height to the overal height including the padding top and bottom (also me). But this is not the case as you will see in the jsFiddle example.
An example:
The element with content is 100px in height.
The max-height is set to 50px (element is now 50px in height).
Now we apply the padding-bottom of 100px (more then the height of the element). The padding of 100px is added to the total height of the element making it 150px.
JsFiddle example: clicky
Extending from Mike's answer, the same can be achieved with a single DOM element & a pseudo element, eg.
html:
<div class="le-div"></div>
css:
div.le-div {
max-height: 200px;
/* 👇 only necessary if applying any styles to the pseudo element
other than padding:
overflow: hidden;
*/
}
div.le-div::before {
content: '';
display: block;
padding-bottom: 60%;
}
Min-height property defines the height when height is solely dependent on padding only but max-height does not.
Not sure why but now in 2020, min and max css units does nice job as we need.
.classthatshoulddefineheight {
padding-bottom: min(20%, 60px);
}
So when 20% becomes greater than 60px then it will be limited to 60px (minimum of them).
The limitation to Mike's answer (and this Brad's answer - although Brad's technique can be incorporated to reduce the number of levels of containers) is that it requires overflow: hidden - which in my use-case (and in many others) a significant limitation.
I've reworked his example to work without overflow: hidden; using an additional level and absolute positioning.
http://jsfiddle.net/2ksh56cr/2/
The trick is to add another container inside the inner box, make it absolute positioned and then add the max-height to that container as well:
.inner-inner {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
max-height: 120px;
}
As long as your fine with having some additional DOM-elements, this should work in all scenarios for more or less all browsers.
Try display: flow-root; on the parent container.
It works in chrome , and not in ff/opera.
Demo here: http://booksnearby.in/browse_items.php . The 'location: Dhoolsiras Village, delhi' line 'hangs' in the middle. I am trying to make it stay at the bottom of its container.
For this I tried
Child span tag- {
bottom: -5px;
font-size: 11px;
left: 115px;
line-height: 20px;
position: absolute;
}
Parent:- element.style {
height: 100%;
position: relative;
}
But it doesn't work, except in chrome. Please help
Thanks.
Do you have to use a table? Because your problems come from the td element's height. Tables have the worst cross browsers support out of all the html elements :)
Is it possible to change the structure to use div elements instead?
OR you could give the position: relative to your .listtd instead of the div (which means remove the position property from the div). This solution will do the trick.
I have an absolute positioned logo on the bottom left of my website... BUT the problem is that ive positioned it to stick to the right of the page but it leaves a invisible barrier to the left of it that spreads across the page. So lets say a link is placed in alignment with that footer element, I won't be able to click it, the absolute positioned layer is spreading over it (even though nothings in it)
Heres my CSS for the logos position:
#basemenu {
margin-right: auto;
position: fixed;
bottom:0px;
width: 100%;
height: 40px;
text-align:right;
right:1%;
}
It sounds like you have an img inside of a <div id='basemenu'></div>. Is that right?
We could really use a block of HTML if you wouldn't mind posting it.
What I don't understand is why you can't target the logo itself with a bit of CSS like this:
#basemenu img {
height: 40px;
position: fixed;
bottom: 0px;
left: 0px;
}
Use the following block property display : none; to hide the block
Is it good practise to set absolute positioning of a footer, if we know its height?
For example, if its height is 100px:
footer {
position:absolute;
bottom: 100px;
background: red;
}
And if its not, could you please help me to position a footer without divs, only with HTML5 tags, because i found some solutions, but they are with extra divs.
footer {
position: absolute;
bottom: 0;
height: 100px;
background: red;
}
When you specify the bottom position property you're positioning the bottom edge, so you don't need to account for the height like that. You'd only set it to 100px if you want the bottom edge to be 100px from the bottom of the page.
Usually the only time I find myself positioning the footer manually is if it's position: fixed though. Assuming your page flow isn't wacked it's usually easy enough to have it be the bottom element on the page naturally, which is what you're trying to achieve with position: absolute;.