Centering a position: fixed div When Viewport Reaches a Designated Width - html

I am looking to create a layout for my site where a sidebar is fixed at the right side of the viewport with a 30% width (content is to the left of it) until the browser window reaches a certain width, at which point I want the content and sidebar to be centred and no longer grow with the browser window (since it becomes hard to read at extremely large widths). Here is an idea of the html being used:
<body>
<div id=sidebar>sidebar content</div>
<div id=content>articles, images, etc</div>
And here is some of the basic HTML being used to format it:
#sidebar {
width: 30%;
position: fixed;
right: 0;
top: 0;
background-color: gray;
}
#content {
width: 70%;
margin-right: 30%;
max-width: 49em;
}
At this point, when the content gets wider than 49em, it sticks to the right side of the page creating an ever-increasing gap between it and the fixed sidebar. What I would like is to have it reach a max width of 49em, have the sidebar reach 21em (so they are still 70:30) and remain fixed, but have that whole 70em worth of width centered in the viewport.
I also want the background colour of the sidebar to span the entire way from the edge of the content to the right-hand side of the screen (i.e. a containing div that centers both the sidebar and content with a max width of 70em doesn't work since the background of the sidebar would only go to the edge of the containing div instead of the viewport). That one isn't as important because it might look fine to put some sort of textured background on the body element to make it look like as though the page is "sitting" on some textured surface (not ideal, but fine). I just haven't been able to center the sidebar and content while maintaining the sidebar's fixed positioning.
Thanks!
Update: here's a very rough schematic of what I am looking for:
|A|B|C|D|
B is the content area with a max width of 49em. C is the sidebar with max width of 21em AND it has to have fixed positioning. A and D would be the margins (each half of the difference between the viewport width and 70em). Background of D must be the same colour (gray) as the sidebar. Background of A must be white.

This solution meets most of your requirements, but you need to provide the width of the content+sidebar (in this case, I put 70em)
HTML:
<div id="container">
<div id="content">articles, images, etc</div>
<div id="sidebar">sidebar content</div>
</div>
CSS:
#sidebar {
width: 29%; background-color: gray; border: 1px gold solid;
float: left;
position: fixed; right: 0; top: 0;
}
#content {
width: 69%; max-width: 49em; border: 1px silver solid;
float: left;
}
#container {
max-width: 70em;
margin: 0px auto;
}​
jsFiddle here. (You can test by just dragging the middle frame left and right)
​

Something like this:
<body>
<div id="wrapper">
<div id="sidebar">sidebar content</div>
<div id="content">articles, images, etc</div>
</div>
</body>
With CSS that is similar to this:
body { background:url(imageForSidebar.png) right top repeat-y; }
#wrapper {
max-width:1000px;
margin:0 auto;
background:#FFF url(imageForSidebar.png) -66% top repeat-y;
position:relative;
}
#sidebar {
width:30%;
float:right;
position: fixed;
}
#content { margin-right:30%; }
The background image on the body would take care of it going all the way to the edge of the screen. You would use a background image that was large enough to do this, but small enough so that it gets covered by the #wrapper background. The background image on the wrapper works in a similar way, but in this case it is just making sure that the sidebar image always extends to the bottom of the content.

You can add media queries into your css
//your normal css
#sidebar {
width: 30%;
position: fixed;
right: 0;
top: 0;
background-color: gray;}
//media query (you can add max and min width of the sceen or one of both)
#media screen and (min-width:500px) {
#sidebar{
//css you want to apply when when width is changed
}
}

Related

Website layout advice

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/

Fix left and right floating images in HTML

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 */

Trying to make large background image remain centered with an auto margin centered content div, but bg image should not affect layout

i want a background image that is larger than the content, which will remain centered with the content, but will not affect the layout (meaning no scrollbars to accomodate the background image). the content must be centered using margin: auto; so that the left side will remain flush with the left side of the viewpane, when the viewpane becomes smaller than the content.
I have seen this question asked several times, and have tried quite a few solutions, but none of the accepted answers have actually worked.
Edit to Clarify
This question is still a bit murkey, so I will attempt to clarify with some images showing what I need. In these images, green is the background image, red is the main content, and blue is the browser's viewpane.
A: When the viewpane is smaller than both the background image and the main content, the left side of the content remains flush with the left side of the viewpane, the background image remains centered to the main content, the viewpanes scrollbars will only scroll out to the right edge of the main content (and not to the right edge of the background).
B: When the viewpane is larger than both the background image and content, both remain centered to the viewpane.
C: When the viewpane is the same size as the main content, the background image should remain centered to the main content, no scrollbars should be present.
Updated Answer: I still have spent way too much time on this :-), especially when it ended up so simple. It allows for a background to be sized based on the height of the container, which seems to be different than yunzen's solution. Now does use margin: 0 auto;. Still grows with container height.
View the new answer.
You can view the original, more complex answer which does not use auto margin.
HTML:
<div id="Bkg">
<div id="Content">Content goes here. </div>
</div>
CSS:
#Bkg {
width: 100%;
min-width: 300px; /* equals width of content */
background:url('http://dummyimage.com/400x20/ffff00/000000&text=Center') repeat-y top center;
padding-bottom: 50px;
}
#Content {
width: 300px;
margin: 0 auto;
}
I guess this is what you want
HTML
<div id="content">
content<br/><br /><br/>
content<br/>
</div>
<div id="background"><div></div></div>
CSS
html, body {
height: 100%;
}
#background {
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100%;
/* this is the height of the bg image */
min-height: 600px;
z-index: -1;
}
#background > div {
margin: 0 auto;
background: url("http://lorempixel.com/800/600/sports/2") no-repeat 50% top gray;
width: 100%;
height: 100%;
/* this is the height of the content */
min-width: 500px;
/* this is the width of the bg image */
max-width: 800px;
/* this is the height of the bg image */
max-height: 600px;
z-index: -1;
}
#content {
/* these are just some numbers */
width: 500px;
height: 400px;
border: 1px solid gold;
margin: 0 auto;
background: rgba(255,255,255,0.2);
}
Well, if it expands past the browser's window size, it's going to create a scrollbar for the entire window. I wasn't sure exactly what scrollbar you're trying to prevent.
max-width tells it "under no circumstances should this box be bigger than this width." So a box bigger than that will simply expand past the parent's boundaries.
See the jsFiddle.
If I'm understanding the question right, I believe this is what you're wanting.
.main-container
{
height: 1005px;
left: 50%;
margin-left: -560px;
position: relative;
width: 1120px;
}
To hide the scrollbars, you can add
overflow: hidden;
For horizontal only:
overflow-x: hidden;
Try this then:
<div id="wrapper" style="position:relative;margin:auto;width:200px;height:200px;">
<div id="image" style="position:absolute;top:0px;left:-100px;width:400px;height:400px;background-image:url(your_bgimage);background-repeat:no-repeat;background-position:top center;">
<div id="content" style="position:absolute;top:0px;left:100px;width:200px;height:200px;"><p>
<p>/* YOUR CONTENT */</P>
</div></div></div>
For some reason I couldn't get the z-index work, but if you can, you can put your content in the wrapper too, and content is not needed.
Given your original diagram I assumed that the background image was intended to be that - an image, possibly hi-res, rather than a repeated pattern. You may want to play with css3 background-size property which is handy for this specific purpose. It is well supported by modern browsers and regresses reasonably well if you have to support IE8 and under.
body {
background-image:url(/*nice higher res picture*/);
background-size:cover;
background-repeat:no-repeat;
}
http://jsfiddle.net/YyzAX/

100% height, centered faux column with sticky footer in right column

Given a 2 pane 100% height based faux column layout, I am trying to have a sticky footer in the right column that does not float over the column's content if the browser viewport is too small to display all the content.
My current problem is that the footer will float over the content if the browser viewport is to small.
This is what I am after:
With the code below though the footer (3) will move over the content (2).
Explanation:
Sidebar - this will have to extend to 100% height of the browser viewport or the combined height of 2+3 (whichever is greater)
Content - Varying amounts of content.
Footer - fixed height footer. This is either at the bottom of the browser window or below the content from no.2 whichever is greater.
Current html:
<div id="wrapper">
<div id="sidebar"></div>
<div id="content">
<div id="footer"></footer>
</div>
</div>
Current css:
html, body {
margin: 0;
padding: 0;
height: 100%;
}
#wrapper {
margin: 0 auto;
width: 1000px;
height: 100%;
}
#sidebar {
width: 400px;
height: 100%;
float: left;
}
#content {
width: 600px;
float: left;
}
#footer {
position: absolute;
bottom: 0;
height:200px;
}
Any help or pointers to get the footer to stay below the content no matter what would be much appreciated.
You need something like this? http://jsfiddle.net/L6BLa/3/
I think this is the concept you're looking for: http://www.cssstickyfooter.com/
Applied the CSS/HTML on the site above to the Fiddle made by Nick: http://jsfiddle.net/L6BLa/2/
Note that you need to move #footer to the outside of #wrapper.
Caveat: #sidebar will only extend as far as the height of its own contents, not the combined height of #content + #footer. You can make #sidebar appear to extend the full length by giving #wrapper the sidebar background and making #sidebar's background transparent.

100% Height and Width, CSS and Dynamic Content

I've looked around and haven't found QUITE what I'm looking for yet, so hopefully this question hasn't already been answered somewhere else!
Anyways, the layout in question can be found HERE. What I am trying to achieve is a fixed width left column, and fluid width content area. For the most part, it works just fine. However, when content expands beyond the browser window's height or width, the sections don't seem to expand like I would want. Notice how to grey bar at the top doesn't reach the right of the page content, and the height of the left column doesn't reach the bottom of the page content either.
Am I right in thinking this stems from the fact that setting something to 100% height or 100% width via CSS is static? i.e. Whatever the height/width of the browser window was when the CSS was called is saved and that's that?
If that's the case, maybe I need to look into some other methods of setting the height and widths of my elements. Any ideas? Also, note that the dummy content in the page is an image for now. I wanted to blur out names, etc. to keep data private.
THANKS FOR ALL OF YOUR HELP!!!
How about something like this...
The left column will only go as far as the right content though. If you want it to expand to the height of the viewport when there's not enough content to fill you'll need some javascript or you'll have to use a repeating background that fills the html
Demo: http://jsfiddle.net/wdm954/KyUfN/
<div id="wrapper">
<div id="left">left</div>
<div id="right">
<div id="content">
<div id="top">top</div>
content
</div>
</div>
</div>
CSS...
/* clearfix */
#wrapper:after, #right:after {
content: ".";
display: block;
height: 0;
clear: both;
visibility: hidden;
font-size: 0;
}
#wrapper, #right {
display: inline-block;
}
#wrapper, #right {
display: block;
-height: 1px;
}
/* end clearfix */
#wrapper {
background-color: #000000;
}
#left {
float: left;
width: 300px;
color: #FFF;
}
#right {
margin-left: 300px;
}
#top {
height: 100px;
background-color: #DEDEDE;
border-bottom: 1px solid #B8B8B8;
}
#content {
background-color: #F4EBEB;
height: 600px;
width: 1200px;
}
If the background is the main problem, you can just style the wrapper. This is what I ended up doing for an unruly sidebar, as I didn't want to resort to JS and other solutions didn't work for me. In my case, the issue with the sidebar came because of jQuery tabs, that are part of the theme. When I switched to the tabs, the sidebar wouldn't extend to the full height, so the background wouldn't either.
HTML
<div id="wrapper" class="sidebar-right">
<div id="maincontent">
#content
</div>
<div id="sidebar-right">
#sidebar content
</div>
</div>
CSS
(this presumes 960 grid with 280px sidebar)
#wrapper.sidebar-right{
background: white url('images/bg.png');
background-repeat: repeat-y; /*repeats down the length of the page*/
background-position: 680px 0px; /*moves it into place*/
}
If you have different sidebars, or full-width layouts, change the background image/position and style accordingly. Hope that helps someone.