I've got a really simple page which uses a photo as a full-screen background. I'm using the following to define it:
body {
background-image: url('../Images/Backgrounds/Hillside.jpg') ;
background-size: cover;
margin: 0px;
}
The image, obviously, takes a little while to load after changing page so I've implemented a noddy jQuery $.load() to update the content without the overhead of a full page reload.
Unfortunately, firefox seems to have an issue when the new content causes the length of the page to change. Firefox correctly realises that the scale of the background image has to change and repaints the page behind the content div appropriately - but doesn't repaint the rest of the page - hence it looks like 2 differently scaled images are overlaid.
Resizing the window or causing a repaint fixes it. Unfortunately, I can't take a screenshot as it never shows the problem - presumably it does a repaint behind the scenes.
To demonstrate the problem, visit the site, shrink your browser window so that content forces a scrollbar. Change URL using the menu. Look at the image behind the main content in comparison to the rest of the page (About us and Sample Ads are long pages, contact us/prices are short).
How can I force firefox to do a full repaint? I suppose I'm looking for the equivalent of WinForm's Me.Invalidate(). Is there a better way to do the background image?
NB: I've shrunk/degraded the photo to reduce file size but haven't spent a lot of time on it yet - I know it can be much better.
Edit:
Environment: FF9.0.1 Win7 Ultimate x64.
Steps to reproduce:
Browse here
Resize the window so that the white content area is just above the bottom of the browser window (Also, it's handy to make sure you can see some land in the background to make the effect more obvious)
Click on the "Sample Ads" link
Click back and forth between Sizes & Prices/Sample Ads
As you do so, you'll notice that anything to the right of the menu doesn't scale but the image under the menu/content does.
There are two solutions I got.
The first is simply on loading new content do the following:
document.body.backgroundSize = 'auto';
document.body.backgroundSize = 'cover';
Just tells it to recalculate the cover area.
The second is very hacky and literally just tells FF to reapply all the styles.
for(var ss = 0, len = document.styleSheets.length; ss < len; ss++) {
document.styleSheets[ss].disabled = true;
document.styleSheets[ss].disabled = false;
}
That said, I would also report this as a bug to FF (if you haven't already or if it does not exist in the system).
I see a problem which probably attributes to your issue. Add this to your stylehseet:
html, body {min-height:100%;}
You see, background-size:cover; is only covering the body's physical dimensions. Let's say your body is actually only 400px with its content, but your window has 1000px of height. The browser first applies background-size:cover; which it does so for the 400px tall body, then it sees there's 600px more of space in the window, and kindly applies the background further; in this case, tiling/repeating it. By giving the html/body a min-height of 100%, as above, your body will always fill the available height.
Related
I am not pro developer and have small knowledge of html and css only. I am trying to work on a joomla website. I tried to add Google charts to my page. Actually it's a module that I am inserting to an article through load module function. But there seems to have a conflict and the chart is not displayed correctly. It seems that there are some conflicts with the issues but I am not sure how to figure.
http://goo.gl/v1GVWk
if you go to above link and go to tabs and open trekking map tab you will see the bug. The width of chart is very small. I want to display 100% so that it can be responsive. I tried changing the width to px as well but no luck.
Please help me. ..
The width of elements that are hidden is zero. Therefore, the chart thinks your window has a width of zero and ends up using its smallest width.
Try triggering a resize event on the window when the tab is shown, this should cause the responsive code to run.
I never used Google charts, but what you are experiencing also happens on Google Maps.
You have two options, either you use opacity (or maybe visibility hidden) instead of display: none, this will make the chart to resize automatically when the page opens.
The other option is to trigger the resize event, something like this... Google chart redraw/scale with window resize
Hope it helps
Even though the outer wrapper div#ja-google-chart-wrapper-404 is set to 100% width, two child elements are fixed at 400px. Specifically, the <svg width="400"> element that sets the image at a fixed width, plus the div that wraps it has the width set to 400px. Even though you have their parent set to 100%, if the image itself has a fixed width it won't expand to fill the space.
Check to see if there's a setting in your module or in the Google Chart itself that lets you set a different width (or none at all) on the inserted image.
One solution would be to resize the SVG element when the a#tab1-trekking-map is clicked. I just tested this in the Chrome console and it worked to trigger the map to resize to the full width of the container:
jQuery("#ja-google-chart-wrapper-404 svg").resize();
Add this (or something like it) to your other scripts that are called when your tabs are clicked. If the ID of the chart wrapper is generated dynamically you may need to adjust a bit, but triggering resize() (as stated by Niet and miguelmpn) should do the trick nicely.
I am looking to make a "10 foot" useable site for TV. Ideally it would have a full screen background image a small header where the nav will be placed and under it a container for the content. I would like for the container itself to have a scroll bar, as oppose to the browser having the scroll bar, since this would lose my top header.
Basically top header should be fixed, an image for a background, and a container that scrolls inside itself. I have tried finding templates or a starting point online for this with very poor results. The best i have found so far is http://css-tricks.com/examples/FullPageBackgroundImage/progressive.php
This is almost what I need except the container overflows the screen so the scroll bar is in the browser. Also this article was written in 2010, maybe there is a better way to achieve this now?
You can use CSS to style the div.
div.scroll {
background-color:#00FFFF;
width:100px;
height:100px;
overflow-y:scroll;
}
Then... all you have to do is position that div as you want.
It's not possible to set transparent background for WebBrowser of WP7. To make impression of transparent background I want to do the following workaround. I want:
To find a position and size of WebBrowser on the page.
To get page's background image.
Crop it with values what I found on step 1.
To save result in IsolatedStorage
To parse HTML and place <body background="RESULTBACKGROUND">
MyWebBrowser.NavigateToString(NewHtmlString);
I think this should be a workaround of transparent background and should work.
For now I am trying just to place any .jpg image (let's say test.jpg) on step 5.
But fail. I have "Build Action" property of file set to "Content". It is placed in the root of the project. And <body background="test.jpg"> not working. Back of the WebBrowser is still white.
What I am doing wrong?
UPD:
Step 5 is solved.
2Claus: No! Not only from web. I saved both html file and image file to IsolatedStorage and WebBrowser can show image as a backgroud.
Now the problem is that background cannot be fixed. I tried many differrent things with styles. I also tried to add a fixed div behind my text. Nothing works. The picture is always scrolling with a text. I tried to add onscroll event and pass it scrolled value to move the div in an opposite direction, but div is glued to the page :(
Any ideas?
So assuming you're talking about the WebBrowser control, you're forgetting that the HTML only can refer to urls on the world wide web.
So either you need to host your background images on a website, or you need to inject a CSS style that sets the background to either white or black (the two default background-colours of the platform).
For WebBrowser, You don't actually have to save it to the ISO to make changes on the page. You can load it navigate to it normally, and then use InvokeScript to make the changes via custom JS code. It can be a little tricky though, as you will probably need to heavily rely on the eval and stringization. The problem mentioned by Claus is still there - but you need to do some experiments. With the Mango release and SDK 7.1+, the platform support IsoltatedStorage imagesources in the form of is://path/file - maybe - maybe - maybe squared - the webbrowser's renderer udnerstands them too - then setting your bkg's url to such would work. I doubt though, as it could be seen as some minor security breach, etc
I now bumped into the same background fixed image problem. For someone wandering here I solved it placing content into a fixed-height container (div) therefore the container contents is being scrolled and not the html page, leaving background picture "fixed".
body
{
background-image:url('...');
background-position:-20px -150px;
background-repeat:no-repeat;
background-attachment:fixed;
}
div
{
height:300px;
overflow:scroll;
}
Of course background-position and div height is set specifically for a WebBrowser position in page and it's size.
So I've spent a significant amount of time coding and designing this webpage, and it works perfectly in every browser I've tested it in: IE7, IE9, Firefox, Chrome, Safari. But when I view the webpage in IE8 (and only IE8), the vertical scroll is disabled. The scroll bar is there all right, but it's turned off and I can't use it or the mouse scroll wheel.
I'll post the code for the webpage if I absolutely have to, but first I wanted to see if anyone had ever heard of this happening before or had any initial thoughts.
Okay, I figured this out. If you put height: "100%"; in the html tag of your page's CSS stylesheet, it will break scrolling in IE8, but other browsers will still work. Go figure.
Here is a hack way of getting the scrollbar to work with a height of 100%. Not the best solution but it now scrolls in IE8.
html {
overflow-y: hidden\9;
}
html, body {
height: 100%\9;
}
body {
overflow-y: scroll\9;
}
mainly three things you should see
If you have given style as overflow:hidden
If you have given hight in page percentage.
if you have given float:static.
Fix this issue your IE 8 problem will be solved.
Reason : IE 8 is different than nything else for CBC check IE frist! To the topic, IE 8 hides (only scrolling bar) of scroll bar if you have overflow as hidden, secoundly if you have places hight as 100% IE 8 takes overflow as hidden (can say takes by its own!) n float is element who can go beyond page size if you have it as inherit or relative but static dose not increase dynamicly.
You tried on other IE8 (not your local ie8)? Maybe the problem is in your ie8.
Run with no-addon mode or try to disable all addons (including bars)
Restore advanced settings. Tools -> Internet Options -> Advanced -> Restore Advanced options.
I have also faced this type of problem many times.Scroll bar with IE8 , should not visible in a plain HTML page. So, please check the content inside your <body></body> tag . There may be is some margin or padding tag.
I am using IE8 currently , but there is no such scroll bar is showing. No need to fix the height:100% for HTML or BODY. Please check your page deeply.
If you are using CSS, it may come in handy that you need a reset CSS value so that the page renders properly in IE8. I have provided the link as well as the snippet from http://sixrevisions.com/css/css-tips/css-tip-1-resetting-your-styles-with-css-reset/ . This may help you. If anything this is a nice site to read if you are starting development.
A reset to where it all started…
The concept of CSS Reset was first discussed formally way back when dinosaurs still roamed the internet (2004 to be exact) by Andrew Krespanis. In his article, he suggests using the universal selector (*) at the beginning of your CSS file to select all elements and give them 0 values for margin and padding, like so:
* {
margin: 0;
padding: 0;
}
The universal selector acts like a wildcard search, similar to regular expression matching in programming. Since in this case, the * isn’t preceded by another selector, all elements (in theory – some browsers don’t fully support it) is a match and therefore all margins and paddings of all elements are removed (so we avoid the spacing differences shown in Example 1).
Applying the universal selector margin/padding reset to our earlier example, we now remove all inconsistent spacing between all browsers (in other words, we don’t make the browsers think for us, we show them who’s boss).
Example 2: Applying the universal selector margin/padding reset
But now we don’t have any spacing in between paragraphs, so somewhere below our universal selector reset, we’ll declare the way we want our paragraphs to look like. You can do it a number of ways – you can put margins (or padding) at the beginning or top of your paragraphs, or both. You can use ems as your units or pixels or percentages.
What’s important is that we choose the way the browser will render it. For our example, I chose to add margins (instead of padding) both at the top of the paragraphs and at the bottom – but that’s my choice, you may want to do it differently.
Here’s what I used:
* { margin:0; padding:0; }
p { margin:5px 0 10px 0; }
Example 3: Declaring a style rule after the universal selector.
Note: The example I used for discussion is a simplified example. If you only used paragraphs for your web pages and no other elements, you wouldn’t want to reset your margins to 0 using the universal selector only to declare a style rule right after it for your paragraph. We’ll discuss this more fully along with other best practices later on down the page.
Shortly thereafter – CSS guru Eric Meyer further built on the concept of resetting margins and paddings. In Eric Meyer’s exploration, he discusses Tanek’s work undoing default HTML styles (which he called undohtml.css) which not only resets margins and padding, but also other attributes like line-heights, font styles, and list styles (some browsers use different bullets for unordered list items).
After many iterations and refinements, we come to a wonderful solution called CSS Reset Reloaded CSS Reset, which not only makes this CSS reset method more accurate than the universal selector method by using higher specificity by naming all possible HTML tags (because the universal selector fails to apply the reset to all HTML tags), but also sets default values for troublesome elements like tables (in which the border-collapse attribute isn’t rendered consistently across browsers).
Of course, there are other methods of resetting your CSS (such as Yahoo!’s YUI Reset CSS which I currently use on Six Revisions), and you can roll your own based on your preference and project needs.
SITE: http://sixrevisions.com/css/css-tips/css-tip-1-resetting-your-styles-with-css-reset/
NOTE: I am kind of new at this, so please bear with me.
So I want a page that's nothing but a square image which scales up to the height of the window. Fine, great, I do:
img
{
max-height:100%;
height:100%;
width:auto;
}
and stick an in a center-aligned div. Firefox loves it, but insists on the height:100%. Chrome doesn't need that, but adds a little bit of height to the page and so a scrollbar pops up. The whole page itself is still rendering identically down to the last pixel, but Chrome seems to think its window is a little heightier than it actually is. What's going on?
Check the margin and padding on the html and body elements -- often a hidden source of pain!
Yes, I know this was in my comment, but this way the question looks answered :-)