As an experiment, I've been trying to center a DIV in a BODY tag using percentages in CSS. I think I had it figured out at one point, but thanks to the magic of TopStyle not having a history once you save, I lost it.
So, here is my HTML:
<html>
<head>
<link href="shadow.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="box"></div>
</body>
</html>
And, here is my CSS:
*
{
margin: 0;
padding: 0;
}
body
{
background-color: #EEEEEE;
margin: 10%;
}
div#box
{
position: absolute;
background-color: #FFFFFF;
width: 740px;
min-width: 80%;
min-height: 80%;
border: #CCCCCC thin solid;
}
To answer your immediate questions:
Why am I using absolute positioning on the box?
So that the box will accept 80% as it's height even without content to stretch it.
Why am I width, min-width and min-height like this?
Since I want the box DIV to take up 80% of the available space, it made sense to use minimums. I'm using a pixel width to make sure that no matter how small the area gets, it won't go any thinner than 740px, causing the browser to activate the horizontal scroll bar. In theory, they content height should activate the vertical scroll bar if the content pushes passed 80% of the available area.
Now the trick is to get it dead centered and maintain a 10% space around the box. I've tried applying "margin: 10%;" to BODY, then "padding: 10%;" to BODY, and finally "margin: 10%" to the box DIV. All of those choices gives me the same result: it's centered horizontally but is acting strange vertically. I'm not getting even space on all sides. The only thing that is behaving as wanted is that the box DIV does appear to be using 80% of the available space.
It seems like this should be right. The box DIV is taking up 80%, the margins are taking up 10% on each side (20% vertically and 20% horizontally), making 100%. Not sure why it's not working.
I swear I had this working in a similar manner, and now I've lost it.
Does anyone have an explanation as to why the percentages don't seem to be displaying correctly and what solution I would need?
Thanks!
Try it like this:
*
{
margin: 0;
padding: 0;
}
body { background-color: #EEEEEE; }
div#box
{
position: absolute;
border: #CCCCCC thin solid;
top: 10%;
left: 10%;
width: 80%;
height: 80%;
min-width: 740px;
min-height: 500px;
}
IE will allow for the DIV to shrink below your limits since min-width and min-height do not work.
Remove position:absolute; from #box
Add this to #box - margin:0 auto;
Get rid of the stuff in body
JSFiddle Demo
JSFiddle Edit
Related
I've just spent 3 or 4 hours trying to understand how to get a "symmetric" DIV inside an HTML page that has to be not scrollable.
The DIV must have the same margins from the window on all sides and must contain an IMG whose size should scale according to the window size maintaining it's ratio.
At the following link you can find the best I've been able to do.
As you can see the DIV has the right margins on the left, top and right size but not on the bottom one! Why not?
Is there something wrong with the DIV style?
<div style="margin: 50px;">
I hope it's quite clear, thank you for your help! :)
Edit: since on JSFiddle it doesn't appear as it should be I've just uploaded an image about what I get on my browser:
Edit 2: this is the link to the last working solution, thank you all for your help, in particular to dcardoso. :)
You should add to your body and html tags (doesn't work in jsfiddle) and remove 'overflow: hidden':
position: relative;
height: 100%;
and to your div tag (remove 'margin:50px'):
box-sizing: border-box; /*This allows for the div padding to be included in the height and width size */
height: 100%;
padding:50px;
The page is getting cut because you are using overflow: hidden; for html and body .
when adding style tag inside jsfiddle style, it is not working. so scroll is visible.
Ahhh, I think I get what you're saying. If the page is longer than your div the space on the bottom is greater than the 50px margin.
You have a couple of choices here, this is just one of many.
I'm using calc() to calculate the 100% width/height minus the 50px on each side.
html, body {
margin: 0px;
overflow: hidden;
}
.maxSizeElement {
width: calc(100vw - 100px);
height: calc(100vh - 100px);
margin: 50px;
}
/* OR YOUR COULD USE... */
.maxSizeElement {
position: absolute;
width: 85vw;
height: 85vh;
top: 0;
right: 0;
left: 0;
bottom:0;
margin:auto;
}
<body>
<div>
<img class="maxSizeElement" src="https://thelostdigit.files.wordpress.com/2014/05/wp_ss_20140507_0002.png" />
</div>
</body>
In image above you can footer top border is not aligned with the login box.I want to restrict border width equal to login container width.
and also I dont want x axis to scroll as in image.
To solve overflow issue I used,
html {
overflow:hidden !important;
}
But it does not seems promising to me,
I want something like this ,
footer top border should be aligned with red lines
Fiddle
You are using position: absolute; so you need to use left: 0; for the .google-footer-bar
Demo
.google-footer-bar {
position: absolute;
bottom: 0;
left: 0; /* Add this here */
height: 35px;
width: 100%;
border-top: 1px solid #ebebeb;
overflow: hidden;
}
Also, it will be better if you wrap up the elements, say a maximum 1000px in width and than use margin: auto; to center them, having no wrapper element will just spoil your layout. As far as 100% width element goes, you can use width: 100%; for the container and then nest 1000px; of another child element with margin: auto;, this way your layout will be stable.
You might want to start by removing width and min-width and also height and min-height.
I'm running into a minor issue with one of the elements on my page. I have a sidebar which I am attempting to have span the height of the page by using the following CSS:
#sidebar {
width: 180px;
padding: 10px;
position: absolute;
top: 50px;
bottom: 0;
float: left;
background: #eee;
color: #666;
}
The corresponding CSS is pretty much what you'd expect:
<div id="header">
The header which takes up 50px in height
</div>
<div id="main-container">
<div id="sidebar">
The sidebar in question
</div>
<div id="main-content">
The rest of my page
</div>
</div>
The code works as expected for the most part. When the page renders it spans 100% of the height (minus the 50px from the top). The problem is that it essentially assigns the box to the exact height of the window so as I scroll down the box scrolls away instead of staying locked to the bottom of the window. Any ideas how to resolve this?
You have to use position:fixed if you want for the sidebar to be fixed on some position:
#sidebar {
width: 180px;
padding: 10px;
position: fixed;
top: 50px;
bottom: 0;
background: #eee;
color: #666;
}
JSFiddle
Another way would be to give to the parent container position:relative, and on his child position:absolute - but then the parent must have some height so the child element takes its height.
html,body{
position:relative;
height:100%; /* some height */
}
#sidebar{
width: 180px;
padding: 10px;
position: absolute;
top: 50px;
bottom: 0;
background: #eee;
color: #666;
}
JSFiddle
Check learnlayout to read more about positioning.
use css position:fixed to make the sidebar fixed.
in order to lock the height according to screen height i would use javascript/jquery:
$(function(){
// assign to resize
$(window).resize(set_height);
});
function set_height() {
$('#sidebar_id').height($(window).height());
}
hope that helps
First of all, I don't understand how it's spanning 100% of the height when no height has been defined.
Secondly use position: fixed instead of absolute.
On a second note, I'd like to recommend what seems a more proper way of going about positioning this. At the end of the main-container div, before it's closing tag, put this
<div style="clear: both;"></div>
and make the main container also float left, or float right if that doesnt give you what you want. It's suprising how such a common layout can feel tricky to do properly. (at least for newbies like us). I might be wrong, this might not be a better way, but it's the way I'd do it. The extra div you add is so that floated divs take up space, apart from that if it doesn't work, give the sidebar a height of 100%, or if you think it will overflow, tell me I'll add to my answer.
I'm working on a website that fits perfectly in the browser window. Below is a basic blueprint of the website layout:
So far, the Red area is just display:block. The Green area is also display:block with margin-right:200px. The Blue areas(nested in a div) is float:right.
So I've got the width sorted. It's the height I need advice on. The Red and Dark Blue areas are a set height, but I need the Green and Light Blue areas to fit the height of the browser window view.
I'm trying to use box-sizing, but it exceeds the height of the window view because it's extending to the max height of the window. Sorry for my poor explanation. Any advice if would be excellent. Thank you!
For green div set height: calc(100%-{red-div-height}); and for the light blue div set height: calc(100%-{dark-blue-div-height}-{red-div-height});
This is kinda the legacy version of C-Link's answer.
jsFiddle and fullscreen
This has the limitation of any content falling below one page-full falling outside of its container (you can see if you scroll down in the fiddle, but not on the fullscreen).
Make sure our page stretches to its full height.
body, html { height: 100%; width: 100%; margin: 0; padding: 0;}
Set a static-height header.
header {
height: 101px;
background: red;
}
Create a box for everything under the header. You were on the right track with the box-sizing. We can add padding to it, in the same amount as our header. Then percentages inside it work nicely.
.content {
position: absolute;
box-sizing: border-box;
padding-top: 111px;
padding-bottom: 10px;
top: 0; left: 0;
height: 100%; width: 100%;
}
We float our aside (may or may not be the correct element, depending on contents) and set some styles on it.
aside {
float: right;
width: 20%;
height: 100%;
padding-bottom: 111px;
box-sizing: border-box;
}
.top {
height: 100px;
background: blue;
}
.bottom {
margin-top: 10px;
height: 100%;
background: skyblue;
}
This is our main, large, content area, which we float to the left. The width could be specified exactly if we wanted exact padding at the cost of additional HTML.
[role="main"] {
width: 78%;
background: limegreen;
height: 100%;
float: left;
box-sizing: border-box;
}
You can also set overflow-y: auto on our main or aside elements, to have them scroll when they run out of space. There should also be mobile styles for this page that remove the floating, absolute positioning, absolute styling, and widths should be nearly 100%.
you can always set the green box height to the window height minus the red box height.
accordingly the light box height to the window height minus the (red box height + the dark blue box height)
Edit 1: I haven't mentioned that has to be done with javascript.
Edit 2: Consider any paddings and margins too.
Could you not just give the divs a max or min height depending on their purpose?
I use a main container or wrapper div that the others would be contained in, that div is then my effective page or screen area.
<div id="wrapper">
<div id="content">
<div id="sidebar">
</div>
</div>
</div>
#wrapper{
min-height: Whatever value you want here;
max-height: Whatever value you want here;
}
It might be a good idea to set up your page using main container divs, hot only for the content but for the header and footer as well.
As an example, I have a main wrapper that is the whole page, within that is the header div, the content div, the nav div and the footer div. These are the main ones. Everything else can then be contained within them.
So, you can set the layout out using percentages so you have a fluid design that'll react to each browser size. The other elements will then 'fit' inside the main divs and be constrained to them. You may need to look into positioning etc but this is certainly the direction you should head towards.
<div id="wrapper">
<div id="header">Header Here including any divs to be contained within this space</div>
<div id="content">All content etc here</div>
<div id="nav">This is your sidebar</div>
<div id="footer">Footer, as per header</div>
</div>
Then use the css to re deisgn the above layout focusing only on those main divs. Use % instead of px to maintain fluidity.
#wrapper{
width: 100%;
height: 100%
}
#header{
width: 100%;
height: 20%
}
#content{
width: 70%;
height: 60%;
float:left;
}
#nav{
width: 30%;
height: 60%;
float:left;
}
#footer{
width: 100%;
height: 20%
}
A pretty common trick is to give the green (and light blue) box absolute positioning, a padding AND a negative margin. Because 100% width is relative to the containing box (could be a parent div, or just the window itself) this is not suitable. When the header was a relative height, say 10%, it would've been easy. The padding makes sure the content will not disappear behind the header, the negative margin puts the box back in place. Don't forget the z-index (otherwise the content (green part) will overlap the header).
The css looks like this:
.header { position: absolute; width: 100%; height: 100px; background: red; z-index: 1; }
.content { position: absolute; width: 100%; height: 100%; padding: 100px 0 0; margin-top: -100px; background: green; z-index: 0; }
The fiddle looks like this: http://jsfiddle.net/2L7VU/
Here's what I'd like to do: have a banner across the top of a website which stretches all across. On the left is a menu, and on the right a logo image; the menu floats left, the image floats right.
The problem is the resizing of the browser window. Because the image floats right, it correctly moves as the window gets smaller. However, at some point it begins to float into the menu. Here is a Fiddle that illustrates this effect with two floating images. Resize the browser window to see how the two images overlap.
Setting
body {
min-width: 800px;
}
I can now make sure that the scrollbar appears as the browser window reaches a certain minimum width. However, that doesn't hinder the right-floating image to keep moving as the browser window keeps getting smaller. I tried to change position: relative but that didn't work. I tried to use Javascript to fixate the images once the browser window reaches its min-width but that didn't seem to have an impact either. Using min-width on the DIV and making the images children of the DIV didn't work either.
My question is: how can I make sure that, starting at a certain window size, the right-floating image stays put instead of floating into the left-floating menu?
EDIT: Oh dear, I forgot to mention a rather important detail: the menu bar at the top needs to be sticky. That is why I used the position: fixed property for the DIV. The other page content is supposed to scroll under that menu and out of the window, see the modified fiddle here which is based on ntgCleaner's answer. This kind-of changes the whole thing, doesn't it! Sorry about that...
Thanks!
A couple things I changed:
I made your banner DIV a container instead of just a free floating div. Probably not necessary.
I gave that banner div a min-width:280px and made it overflow:hidden;
I made the images just float left and right, not positioned relatively or absolute (since it's in the div container now).
#banner {
left: 0px;
top: 0px;
width: 100%;
height: 60px;
background-color: lightblue;
z-index: 1;
opacity: 0.8;
overflow:hidden;
min-width:280px;
}
#left {
float:left;
margin:5px;
height:40px;
}
#right {
float:right;
margin:5px;
height:40px;
}
Here's the fiddle
EDITED FOR THE EDITED QUESTION:
You will just need to place all of your content under your header into a div, then give that div a top margin of the height of your fixed div. In this caes, it's 60px.
Add this to your HTML
<div id="content">
this <br>
is <br>
some <br>
test <br>
text <br>
</div>
then add this to your CSS
#content {
margin:60px 0px 0px 0px;
}
Here's the new fiddle
Is this what you are after? http://jsfiddle.net/9wNEx/10/
You are not using the position: fixed correctly. Fixed means 'positioned relative to the viewport or browser window', and that is exactly what you are experiencing.
I removed the position: fixed from the images, and placed them inside the div. This should keep them always on top of the page, as they are inside the div that is still positioned fixed.
Also I tweaked some of the other styling to replicate your example. Note that i removed the fixed height of the head and replaced it by a padding bottom. This way the height will follow the content whenever the screen size becomes to small and the images are forced underneath each other.
The css looks like this now:
#banner {
left: 0px;
top: 0px;
width: 100%;
padding-bottom: 15px;
background-color: lightblue;
z-index: 1;
position: fixed;
opacity: 0.8;
}
#left {
float: left;
margin-left: 10px;
margin-top: 5px;
height: 40px;
}
#right {
float: right;
margin-right: 10px;
margin-top: 5px;
height: 40px;
}
I changed your HTML to put the <img> tags inside the banner, and added the min-width to the #banner since it has position: fixed. You'll still need to add min-width to the body or a container that wraps all other elements if you want there to be a min-width of the entire page.
http://jsfiddle.net/Wexcode/s8bQL/
<div id="banner">
<img id="left" src="http://www.google.com/images/srpr/logo3w.png" />
<img id="right" src="http://www.google.com/images/srpr/logo3w.png" />
</div>
#banner {
width: 100%;
min-width: 800px;
height: 60px;
background-color: lightblue;
z-index: 1;
position: fixed;
opacity: 0.8; }
#left {
float: left;
margin: 5px 0 0 10px;
height: 40px; }
#right {
float: right;
margin: 5px 10px 0 0;
height: 40px; }
When I look at your Fiddle I think your problem isn't the floats at all. position:fixed supersedes float. Those two elements aren't floating at all, they're in a fixed position (similar to an absolute position), which is why they overlap when they don't have enough room.
Take out float:left and float:right, the result will be the same. Also, top, left, bottom, and right don't work on non-positioned elements. So they are superfluous on your banner.
If you use floats, however, when there is not enough room the right image will wrap underneath the left. See http://codepen.io/morewry/pen/rjCGd. Assuming the heights on the images were set for jsfiddle testing only, all you need is:
.banner {
padding: 5px; /* don't repeat padding unnecessarily */
min-width: ??; /* to keep floats from wrapping, set one */
overflow: hidden; /* clearfix */
}
.right { float: right; } /* only need one float, don't over-complicate it with two */