You know the part of a modal popup (image lightbox, yes/no dialog) that dims out everything behind it? I call it the Blanket. Cozy.
Anyway, I want my modal to be tucked in by a blanket who is half see-through. I can't seem to get it to work in IE7 and IE8.
Based on my readings from
This CSS Tricks Snippet,
This Quirksmode Article,
and Satzansatz's Article on the Quirky Behavior IE's Schizophrenia Can Yield,
This is what I have come up with:
.blanket {
z-index:100;
position:fixed; top:0;right:0;bottom:0;left:0;
/*//////*/ background:black; /*//////*/
-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
filter: alpha(opacity=50);
opacity: 0.5;
}
It doesn't work at all. I have no idea why, and I haven't found any permutations where it does work. At all. I can't even make a little static-positioned black square. What's going on?
How can I make opacity work across all significant browsers?
CodePen
The Fullscreen CodePen Result (for testing in IE)
In IE7 & IE8, I just see pure black.
Am I going crazy? Let me know if I'm going crazy..
But I'm starting to suspect that maybe IE10's "Browser Modes" emulation shit is quirky, insufficient, and responsible..
Was it something I've done? Or didn't!?
Related
I have one strange bug on my website. When i trying to transform block with text by using
transform: translateY(0px) translate3d(0,0,0) translateZ(0);
i got this block but with black (or white) stripes behind the text. I suppose in depends what background is - light or dark.
I can't attach the screenshot for example, so i leave a link.
Animated blocks - text block that appeared when you scroll the page.
This animation perfectly work in all browsers, but not in Firefox (windows ver.).
Maybe someone saw this and could help...
Thanks!
I solved my problem by setting
outline: 1px solid transparent;
property for each animated block on the page. It was helpful.
I found this solution in this answer.
This might be a result of a bug that I have encountered. There are still quite a few of optimization problems when it comes to transitions, in any browser, but particularly Firefox.
Have you tried setting perspective: 1000; to the parent element? It's served as a quick fix to some of these problems.
Nice website, by the way!
I think I asked about the opposite problem a while ago (allow mouse event to pass through a transparent area on an image - I ended up using an imagemap for that) but anyway:
I need a mask element for when a dialog comes up. In the past I've used:
position:fixed;
left:0;top:0;right:0;bottom:0;
background:#000000;
opacity:0;
filter:alpha(opacity=0);
And it works, but it's kind of a "hack".
I've not been able to get an element with background:transparent to intercept mouse events. Is this intentional? Is there any way around this other than the above? Or is the above the best solution for this problem?
The issue with background:transparent appears to be specific to IE (tested in IE7/8/9). It's not an issue in other browsers.
It's also specific to HTML form elements. For instance, it works fine in IE for text inside a paragraph tag but not for a button tag. Most likely it's a rendering bug in IE, rather than the result of a deliberate engineering decision by Microsoft. There used to be a similar issue in IE6 with select boxes not layering correctly with position:absolute.
It'd be safer to use opacity than background:transparent in this case. It may feel less like a hack if you change the opacity of the mask to make it partially transparent instead of fully transparent.
I have some nav elements positioned with transform: rotate() and box-shadow. When you hover them they 'pop out' a little bit to indicate you can click on them. In Chrome and Safari (indicating this is a webkit issue) when you hover some of the nav items the box shadows go haywire and cover up portions of other random elements. It works fine in Firefox.
I made a jsfiddle portraying the issue as simply as I could figure out how to:
http://jsfiddle.net/Q39eJ/1/
Hover over and then out of the first one or 2 elements and you'll see the issue in action.
The site I'm working on has the issue here:
http://temp.go-for-english.com/
(URL will soon change to http://www.go-for-english.com if this one doesn't work)
If anyone can figure out a work-around that still utilizes CSS3 to make it look normal (Maybe set the z-index again on the hovers, or some other weird workaround that I'm not sure about) I'd greatly appreciate it :) I'd really rather not resort to images :(
UPDATE:
I've been informed it looks fine on Windows Chrome =\ I'm using Mac OSX 10.6, here's a screenshot of the behavior I see:
http://s9.photobucket.com/albums/a74/nZifnab/?action=view¤t=Screenshot2012-01-19at13205PM.png
My client has also pointed out the issue because they use Safari.
I figured out a bit of a work-around that mostly works. Found this stackoverflow question: How can I force WebKit to redraw/repaint to propagate style changes? related to forcing a repaint of elements using javascript. So I updated my fiddle with this code to force a repaint of the elements with box shadows:
$(function() {
$('.top-nav a').hover(function() {
redrawMe($('.top-nav a'));
})
});
function redrawMe(obj) {
obj.hide();
obj.each(function() {
this.offsetHeight;
});
obj.show();
}
I tried only redrawing the element that was being hovered redrawMe($(this)); but it didn't work, when any of them gets hovered, I need to redraw all of them. Appears to mostly do the trick but there's still some darker shadows that appear in the cracks between each element. I feel that this is acceptable and barely noticeable. jsfiddle with my proof of concept:
http://jsfiddle.net/nzifnab/Q39eJ/4/
Haven't updated that live site with it yet, but shall soon.
If anyone can manage to find a way to make even the shadows between each element disappear I'll accept your answer instead :)
Again, this may only be happening on MacOS X in both chrome, and safari.
A known old known problem is that various old browsers both IE 7 (perhaps also IE 8) and FireFox 3.0 ~ 3.6, are the experiencing of very SLOW scrolling down through a webpage whenever a background image img or div with an image has the position: fixed; property.
Having built a site with this feature I noticed that in IE 7 (maybe 8 too) that had a terribly sluggish scrolling experience ruing the good enjoyment of the entire website. All other JQuery effects were also not smooth anymore. Now, as soon as I commented the position: fixed; property of the background image div:img, everything becomes good again.
<html><head>
img#bg {
/* position:fixed;*/
top:0;
left:0;
height:auto;
min-height:100%; /* proportionally fit height (eg panorama images) */
width: 100%;
z-index:-2;
}
</head>
<body><img src="background.jpg" id="bg"/></body>
</html>
Q1: How to make that line conditional? Users with IE7 or IE8 /*position:fixed;*/ and users with IE9 or FF4 position:fixed
Q2: Could anything in my css have triggered the bug except position: fixed? for example should img#bg be written differently?
Some links: MozzilaZine, StackOverflow, LinDesk
Thanks very much for your suggestions and ideas on this browserbug. Much appreciated!
Q1: How to make that line conditional?
For IE older than version 9 there's always a conditional comment override:
<!--[if lt IE 9]>
<style>img#bg { position: absolute; }</style>
<![endif]-->
For Firefox, one way would be to find some hack that distinguishes version 4 from its predecessors, which I can't really think of right now.
Q2: Could anything in my css have triggered the bug except position: fixed?
That and the fact that it's an image. But mostly the fixed positioning. This also happens if you used a background image with background-attachment: fixed, and is a well-known performance issue on those browsers.
Q1: How to make that line conditional?
If you'd rather not to use conditional comments (per BoltClock's reply), a summary of browser-specific CSS hacks can be found on Paul Irish's site.
Q2: Could anything in my css have triggered the bug except position: fixed?
Short answer: Yes, but probably none as much as position: fixed. If removing it fixes your issue, it's your biggest problem.
Slightly longer answer: box-shadow has been shown to cause performance issues. So will IE's proprietary filters. Inefficient selectors are sometimes mentioned, but it's debatable whether they have a large effect.
To profile your code, use the CSS Stress Test bookmarklet to drill down on exactly which selectors are causing your browser trouble. It's great!
Little background information here: I have narrowed down the problem, but can't determine what the fix is. In IE6 the input box won't allow me to use my mouse to select it.
Please go here to see the problem: http://www.malahatautoparts.com/business-application/
The problems stems from an IE6 fix for the CSS background.
#main{
background-position:-9999px -9999px;
filter: progid:dximagetransform.microsoft.alphaimageloader( src='http://www.malahatautoparts.com/wp-content/themes/malahat/images/bg-main.png', sizingmethod='crop');
}
If I remove that from my IE6 css file, input box all of a sudden works.
Any ideas on what I can use to fix this?
The conditional comment you have there for "less than IE 7" isn't even working right for the PNG transparency it's supposed to fix in IE6: I'm seeing grey background around the transparent corner areas. In IE7 the transparency works natively without loading that stylesheet.
The method you're using in the IE stylesheet relies on the alphaImageLoader filter, which I suspect is blocking over top of the HTML form controls on the page.
There's an alternate method that uses VML instead: check out DD_BelatedPNG. I'm not 100% sure if it will solve your problem, but I have a hunch it will, and it's a cleaner solution than what you're using now.
<textarea> and <input> selections: selectionStart and selectionEnd are not implemented in IE, and there's a proprietary "ranges" system in its place, see also Caret position in textarea, in characters from the start.
Also see What are the typical reasons Javascript developed on Firefox fails on IE for common reasons of failure of Javascript/CSS in IE which work in Firefox & other browsers (or vice versa).
Some excellent tips so you can get a uniform look & usage in all browsers.
use css with
#main{
background-position:-9999px -9999px;
filter: progid:dximagetransform.microsoft.alphaimageloader( src='http://www.malahatautoparts.com/wp-content/themes/malahat/images/bg-main.png', sizingmethod='crop');
position: relative;
}