Fix iframe height to be exactly same as containing div - css

I have a simple 4-panel webpage set up mostly using divs and css. The panel divs are header, footer, menu, and content. The menu and content are supposed to be parallel columns with the same height.
Everything works fine until I put an iframe inside the content div. The content div then becomes taller than the menu div, even when I set them to the same height. I know that the iframe is the reason because this doesn't happen when I take out the iframe, but it's the content div - not the iframe - that actually is too tall.
How can I fix this? Some similar questions have been asked, but the proposed solutions didn't work for me, unless I was doing something wrong. Here's my complete code:
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>
<style>
body {
margin: 0;
padding: 0;
}
#header {
background-color: #7D110C;
height:100px;
}
#menu {
float:left;
width:300px;
background-color: lightGrey;
min-height:500px; /* for modern browsers */
height:auto !important; /* for modern browsers */
height:500px; /* for IE5.x and IE6 */
}
#content {
margin-left:300px;
background-color: white;
min-height:500px; /* for modern browsers */
height:auto !important; /* for modern browsers */
height:500px; /* for IE5.x and IE6 */
}
#content iframe{
width:100%;
border:none;
margin: 0;
padding: 0;
background-color: pink;
min-height:500px; /* for modern browsers */
height:auto !important; /* for modern browsers */
height:500px; /* for IE5.x and IE6 */
}
#footer {
clear:both;
background-color: #7D110C;
height:100px;
}
</style>
</head>
<body>
<div id="header"></div>
<div id="menu"></div>
<div id="content"><iframe id="content_iframe" name="content_iframe"></iframe></div>
<div id="footer"></div>
</body>
<script type="text/javascript">
console.log( $('#content').css('height') );
console.log( $('#content_iframe').css('height') );
</script>
</html>

height:auto !important; overrides height:500px; in #content and in #content iframe. If you get rid of the height:auto !important; in both CSS classes, it works fine. jsFiddle
Ok here's the real fix, just leave everything as is and add display: block to #content iframe. That fixes it. An iframe is an inline frame, hence the extra white space. Updated jsFiddle

For modern browsers you can try this:
add position:relative to #content
remove width, height, min-heigth from #content iframe and add this instead:
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
No idea what to do for IE 5 and 6, though.

If you set a fixed height:500px; and the iframe is taller than this, you will get a scrollbar on the side.
If you want a fixed height at all times, remove both height: auto !important and min-height: 500px and leave only height:500px.
height-auto: The browser calculates the height. This is default.
min-height: Defines the minimum height
The following will make menu and content have the same height at all times.
HTML
<div id="wrapper">
<div id="menu"></div>
<div id="content"><iframe id="content_iframe" name="content_iframe"></iframe></div>
</div>
CSS (Just add this to the already existent)
#wrapper { display: table; }
#menu { display: table-cell; } /* Remove the float */
#content { display: table-cell; } /* Remove the float */
Note, this won't work on IE7 and below though. Either you'll have to use fixed height for both menu and content or javascript.

Related

sticky footer bottom margin with conditional fixed position bottom nav bar

I have a sticky footer that uses the flexbox technique which works perfectly fine and expands when the content fills the page.
I'm now trying to add a conditional, based on a particular user, fixed position bottom navbar. i've applied margin-bottom to the footer which is fine when the content fits within the page however when the content grows i cannot scroll the page to the bottom and view the full footer. It seems the bottom-margin is not applied to the footer when the content grows to fill the page. Any help would be appreciated, example code and Codepen below.
<html>
<head>
<style>
html, body {
/* IE 10-11 didn't like using min-height */
height: 100%;
}
body {
display: flex;
flex-direction: column;
}
.content {
flex: 1 0 auto; /* Prevent Chrome, Opera, and Safari from letting these items shrink to smaller than their content's default minimum size. */
padding: 20px;
}
.footer {
flex-shrink: 0; /* Prevent Chrome, Opera, and Safari from letting these items shrink to smaller than their content's default minimum size. */
padding: 20px;
}
* {
box-sizing: border-box;
}
body {
margin: 0;
font: 16px Sans-Serif;
}
h1 {
margin: 0 0 20px 0;
}
p {
margin: 0 0 20px 0;
}
footer {
background: #42A5F5;
color: white;
margin-bottom: 25px;
height: 50px;
}
.conditionalNav {
position: fixed;
bottom:0;
left:0;
width:100%;
background:green;
color: white;
padding:5px;
hight:25px;
}
</style>
<meta charset="UTF-8">
<title>Sticky Footer with Flexbox</title>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
</head>
<body>
<div class="content">
<h1>Sticky Footer with Flexbox</h1>
<p><button id="add">Add Content</button></p>
<p>some content</p></div>
<footer class="footer">
Footer
</footer>
<div class="conditionalNav">
Conditional bottom navbar
</div>
</body>
</html>
https://codepen.io/pinman/pen/eYBLYOR
Setting height: 100% on html and body (as opposed to min-height) prevents the document height from exceeding the viewport height, so your additional content is overflowing scrollable area.
You could remove body from the 100%, leaving it on html, or add overflow: auto to the html/body rule so that the body element can scroll (as opposed to scrolling the window).
Edit: removing 100% height from body allows the footer to move off the bottom of the window. Updated accordingly.
html, body {
/* IE 10-11 didn't like using min-height */
height: 100%;
overflow: auto;
}
You also have a typo in your .conditionalNav rule:
hight:25px;

force footer on bottom on pages with little content

I have a page with only a couple of lines of content. I want the footer to be pushed to the bottom.
<div id="footer"></div>
I don't want to use
#footer
{
position:fixed;
bottom:0;
}
AKA Sticky Footer
Is this possible without jQuery?
any suggestions?
This Flexbox solution is neater and far easier to implement:
HTML
<body>
<div class="content">
content
</div>
<footer class="footer"></footer>
</body>
CSS
html, body {
height: 100%;
}
body {
display: flex;
flex-direction: column;
}
.content {
flex: 1 0 auto;
}
.footer {
flex-shrink: 0;
}
Just ensure you wrap the necessary divs inside the body.
Update 2021 - CSS GRID
Here is a solution using CSS Grid, this is by far the best way to do it on 2021.
html, body {
margin: 0;
height: 100%;
}
body {
display: grid;
grid-gap: 10px;
grid-template-columns: 1fr;
grid-template-areas: "main" "footer";
grid-template-rows: 1fr 80px;
}
main {
background-color: #F8BBD0;
grid-area: main;
}
footer {
background-color: #7E57C2;
grid-area: footer;
}
<body>
<main>The content</main>
<footer>Footer</footer>
</body>
Old Answer
There is another sticky footer by Ryan Fait that doesn't use position fixed:
* {
margin: 0;
}
html, body {
height: 100%;
}
.wrapper {
min-height: 100%;
height: auto !important; /* This line and the next line are not necessary unless you need IE6 support */
height: 100%;
margin: 0 auto -155px; /* the bottom margin is the negative value of the footer's height */
}
.footer, .push {
height: 155px; /* .push must be the same height as .footer */
}
Here is a solution that does not require that the footer be placed outside of the main wrapper element, which is how most people structure their pages.
html,
body {
margin: 0;
height: 100%;
}
.wrapper {
box-sizing: border-box;
position: relative;
padding-bottom: 1em; /* Height of footer */
min-height: 100%;
}
header {
background-color: #cff;
}
footer {
position: absolute;
bottom: 0;
width: 100%;
color: #fff;
background-color: #000;
}
<div class="wrapper">
<header>I am the header.</header>
<article>I am content that doesn't fill the page. The footer will appear at the bottom of the browser window. However, when I do fill the page, you will need to scroll down to see the footer.</article>
<footer>I am the footer.</footer>
</div>
Explanation
The wrapper element will fill 100% of the viewport height. (You could also use 100vh for the wrapper if you don't want to set the height of the html and body elements.) The wrapper also has a bottom padding to create a placeholder for the footer to sit.
The footer is absolutely positioned to the bottom of the wrapper and sits in the placeholder created by the wrapper's bottom padding.
This means that when the page does not have scrollbars, the footer will be positioned at the very bottom. However, when there is enough content for scrollbars to appear, the footer will be pushed down below the content.
(The color and background-color CSS properties in the example are for decoration only, obviously. They are included so that when you run the code, you can clearly see the separated sections.)
Try Sticky Footer Solution by Steve Hatcher
/*
Sticky Footer Solution
by Steve Hatcher
http://stever.ca
http://www.cssstickyfooter.com
*/
* {
margin: 0;
padding: 0;
}
/* must declare 0 margins on everything, also for main layout components use padding, not
vertical margins (top and bottom) to add spacing, else those margins get added to the total height
and your footer gets pushed down a bit more, creating vertical scroll bars in the browser */
html, body {
height: 100%;
}
#wrap {
min-height: 100%;
}
#main {
overflow: auto;
padding-bottom: 180px;
}
/* must be same height as the footer */
#footer {
position: relative;
margin-top: -180px; /* negative value of footer height */
height: 180px;
clear: both;
}
/*Opera Fix*/
body:before {
/* thanks to Maleika (Kohoutec)*/
content: "";
height: 100%;
float: left;
width: 0;
margin-top: -32767px; /* thank you Erik J - negate effect of float*/
}
/* IMPORTANT
You also need to include this conditional style in the <head> of your HTML file to feed this style to IE 6 and lower and 8 and higher.
<!--[if !IE 7]>
<style type="text/css">
#wrap {display:table;height:100%}
</style>
<![endif]-->
*/
Another way to do this if you don't know the footer size is to use javascript and css
html, body{
height:100%;
height:100%;
}
#footer{
background-color: #292c2f !important;
position:absolute;bottom:0px;
}
and Javascript part
$(document).ready(function(){
if ($(document).height() > $(window).height()) {
$('#footer').css('position', 'relative');
}
});
You can do this with another approach just easily by setting min-height on the tag before your footer tag.
.the-tag-before-footer{
min-height:30%;
}
I tried a lot of approaches, but results were different when page was totally fill or not. The simplest and efficient solution is to use flex.
html, body {height: 100%;}
body {display: flex; flex-direction: column;}
.content {flex: 1 0 auto; padding: 20px;}
.footer {flex-shrink: 0; padding: 20px;}
<div class="content">
<h1>The GOAT Footer with Flexbox</h1>
<p>You can add content to test with a full page</p>
</div>
<footer class="footer">
The GOAT Footer
</footer>
Credits to CSS Trick
First wrap all of your main content in a div element and give it a class of “wrapper” (or call it whatever you want).
HTML:
<body>
<div class="wrapper">
<h1>Main Content</h1>
</div>
<footer>
<p>Footer Content</p>
</footer>
</body>
Now, make sure you give your footer a height.
Then use the calc() function to set the height of your wrapper equal to the height of the viewport (display), minus the height of the footer.
.wrapper {
min-height: calc(100vh - 50px);
}
footer {
height: 50px;
}
Now, if you have extra margins on your wrapper content you will have to increase the amount of pixels you subtract from the viewport height to reflect that. Other than that, this is a super easy and quick fix. No javascript needed, and only two CSS rules.
The problem is simple to solve for anyone using Bootstrap 4 or higher, just include this snippet on your website:
<script>
$(document).ready(function(){
if ($('body').height() < $(window).height()) {
$('footer').addClass('position-absolute bottom-0');
} else {
$('footer').addClass('position-static');
}
});
</script>
Here we check if the height of the BODY tag is less than the height of the browser window, if positive we place the footer at the bottom of the page and if negative we make the footer static and it will remain where it is. You don't need to change your current code, you just need to include this javascript in your page or package, remembering that to work the <body> tag must have position: relative, if you haven't changed the tag's "position" property in CSS <body>, you don't need to do anything as it is the default value.
Make sure to include the code after jquery, without jquery it won't work.
If you are not using the <footer> tag, you should change the $('footer') selector as appropriate.

100% window height | 100% parent div width

I want to create an HTML page which:
Appears centred horizontally
Has a white background the entire height of the window
Contains a fixed header and scrollable content
I am having two issues related to {width: 100%} and {height: 100%}.
My header is 100% of the page width, when I expect it to be 100% of its parent width.
The background appears at 100% of the window height, but it then scrolls up with the content.
I would appreciate any help in understanding how CSS treats the 100% value in these two cases. I am not asking for a workaround: I already have that. I am asking for insights into the way CSS thinks.
Many thanks in advance,
James
Here's a demo of the issue
And here's the barebones HTML:
<!DOCTYPE html>
<head>
<title>Width & Height 100%</title>
<style>
html {
height:100%;
}
body {
background: #666;
height: 100%;
margin: 0;
}
#container {
position: relative;
height:100%;
background: white;
width: 400px;
margin: 0 auto;
padding: 0 0;
}
#header {
position:fixed;
z-index:100;
background:#ffe;
/* width:760px; */
width:100%;
height:64px;
}
#content {
position: absolute;
left:20px;
width:360px;
height:360px;
margin:64px 0 0 0;
background:#efe;
}
</style>
</head>
<body>
<div id="container">
<div id="header">
Fixed header
</div>
<div id="content">
Scrollable content
</div>
</div>
</body>
</html>
All of these fixed positions are going to give you headaches.
About the widths: the box model is usually the problem. I start every CSS with body height and width set to 100%, and then reset my box model so it matches across browsers, and applies all of my padding to the inside of a box instead of the outside:
/* Set box models to match across browsers. */
* {
box-sizing:border-box;
-moz-box-sizing:border-box;
webkit-box-sizing:border-box;
max-width:100%;
}
Then set your width on a container using padding, first the mobile width, then the screen width to override:
#container {
padding: 0px 10px;
}
#media only screen
and (min-width : 700px) {
#container {
padding: 0% 30%;
}
}
For a full layout, you can visit my site:
http://instancia.net/fluid-sticky-footer-layout/
I should probably add the mobile bit to that page. :)
Fix header
Change the header position fixed to position absolute
Fix content height
* {
margin: 0;
}
html, body {
height: 100%;
}
#container{
min-height: 100%;
height: auto !important;
height: 100%;
background:#efe;
}
#content {
padding: 64px 20px 0;
}
Live example with pos fixed
http://jsfiddle.net/qB4sD/1/

Divs width problem

My problem is that ratio of width/height (for div with id="wrapper", different is huge) isn't the same on Chrome, Mozilla and IE (IE looks like refuse attribute for heigt at all). Any help, I need two divs fixed size, one beside other .
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title></title>
<style type="text/css">
div#wrapper {
width: 1000px;
width:700px;
margin-left:auto;
margin-right:auto;
overflow: hidden;
}
div#left {
width: 80%;
height: 80%;
min-height: 80%;
float: left;
background-color: #DFDFDF;
border-left-width:2px;
border-left-style:solid;
border-left-color:#606060;
border-bottom-width:2px;
border-bottom-style:solid;
border-bottom-color:#606060;
border-top-width:2px;
border-top-style:solid;
border-top-color:#606060;
}
div#right_up {
width: 19%;
height: 80%;
min-height: 80%;
float: left;
background-color: whitesmoke;
border-top-width:2px;
border-top-style:dashed;
border-top-color:#FF2A2A;
border-right-width:2px;
border-right-style:dashed;
border-right-color:#FF2A2A;
border-left-width:2px;
border-left-style:solid;
border-left-color:whitesmoke;
}
</style>
</head>
<body id="body"">
<div id="wrapper">
<div id="left">
REFERENCE:
</div>
<div id="right_up">
</div>
</div>
</body>
</html>
First of all you cannot use percentage heights on floated elements.
Second, I see no height set on the wrapper div
Make sure that your code validates: http://validator.w3.org/ . Fixing the little errors it find will remove a lot of variance between browsers.
For instance, you've specified the width attribute twice for #wrapper, which doesn't make any sense.
Hey Rebecca and welcome to SO! :)
First of all, I don't think you could ever get mixed measurements units act the way you want. You have divs width in percentages and border width in pixels, basically you're hoping that 1% will never mean more than 2px for the wrapper width.
Let's take it step by step. First of all, you have 2 widths for the wrapper div. The second will overwrite the first and you'll end up with a width of 700px. That's very little, you should reconsider to a width of 960px or a max. of 990px (which assures you won't have an horizontal scrollbar on 99.9% of the screen resolutions today.
Let's rewrite that to:
div#wrapper {
width: 700px; /* 700 to stick to your design */
margin: 0 auto; /* which is basically the same as you have, but in one property, not two */
overflow: hidden;
}
div#left {
width: 558px; /* 80% of 700px (wrapper div) minus the border width. It will never change so there's no need to set it in percentages */
height: 80%; /* height will overwrite min-height on FF for example. Also, min-height doesn't work in IE, setting a fixed height might be the best way to go */
min-height: 80%;
float: left;
background-color: #DFDFDF;
border: 2px solid #606060; /*set a border all over the div */
border-right: 0; /* and remove the right border */
}
div#right_up {
width: 140px; /* 20% of 700px */
height: 80%; /* same height problem as you have for the other div here */
min-height: 80%;
float: right; /* float right, not left like the other one */
background-color: whitesmoke; /* please set colors in hex, not like this */
border: 2px dashed #FF2A2A;
border-left: 2px solid whitesmoke; /* again, colors in hex please */
border-bottom: 0;
}
Also, add a div with class clear in the markup like this:
<div id="wrapper">
<div id="left">
REFERENCE:
</div>
<div id="right_up">
</div>
<div class="clear"></div>
</div>
And add a class definition in the css like this:
.clear {
clear: both;
}
The last advice is to allways put your CSS in an external stylesheet and reference it in your page in the head section of the HTML like this:
<link rel="stylesheet" type="text/css" href="path/to/style.css">
Good luck!

How to center a <div> element in IE6

trying to implement a dialog-box style behaviour using a separate div section with all the stuff inside it.
When the "dialog box" needs to be shown, it has to display at the center of the WINDOW, not in the center of the page, that is, REGARDLESS of the scroling position. Furthermore, the correct solution will not move the "dialog box" if the user scrolls the page.
In Chrome and FF this works using position='fixed' and centering the div in the intuitive way.
This does not seem to work in IE6 (apparently fixed is not supported there).
Any ideas?
If I were you I would do it using jQuery and I would suggest you try it out too. This should fit perfectly for jQuery based solution [jQuery Version][1] or try out
body {
font: 80% verdana, arial, helvetica, sans-serif;
text-align: center; /* for IE */
}
#container {
margin: 0 auto; /* align for good browsers */
text-align: left; /* counter the body center */
border: 2px solid #000;
width: 80%;
}
Try the method outlined here.
Use overflow-y and absolute positioning to emulate fixed positioning in IE6 using the following steps:
Create an absolutely positioned div and give it the desired top and left coordinates on the page
Set html {overflow-y: } to be hidden or visible instead of the default auto or scroll to eliminate the scrollbar for the absolutely positioned div
Set body{overflow-y: } to be auto or scroll to insert a new scrollbar for the body content
Set body { margin:0; height:100% } to make sure the content scrollbar goes the length of the page
Set top and left margins on the body to separate the content from the absolutely positioned div
Make sure the doctype is set to trigger Standards Mode in IE
Set the absolutely positioned div to top:50%; left:50%;
Add position:relative and the desired opacity to the container div
If the doctype is not set, move the html rules to the body tag, and the body rules to a wrapper div
<!DOCTYPE html>
<html>
<head>
<style>
body { margin:0; margin-left: 14em; }
#fixedbox { position: fixed; top: 1em; left: 1em; width: 10em; }
#fixedbox { padding: 0.5em; border: 1px solid #000; }
#container { height: 2000px; }
#media,
{
html { _overflow-y: visible; *overflow-y: auto; }
body { _overflow-y: auto; _height: 100%; }
#container { _position: relative; }
#fixedbox { _position: absolute; _top:50%; _left: 50%; }
}
</style>
</head>
<body>
<div id="container">
Fixed box
</div>
<div id="fixedbox">
Homer
</div>
</body>
</html>

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