Well, this is a weird one.
I have web page with several svg images.
(I also detect not supported svg browsers and display a regular image instead, but I guess it is not relevant here).
Sometimes (I found it so far in Chrome OSX and Windows), the browser displays another svg instead of the one mentioned in the html .
Assuming I have to svg files linked from my page, logo.svg and logo2.svg, it might display logo2.svg intead of logo.svg.
I've inspected the elements , and all seems to be fine. HTML referes to one svg, while the browser displays a different svg (located on another part of the html) instead.
Any idea ?
<a href="Home">
<div style="float:left;width:170px;height:154px;">
<object class="svg-default" data="/images/logo.svg" type="image/svg+xml" style="width:100%; height:100%;z-index:1000;">
</object>
<img class="svg-fallback" src="/images/logo.png" style="width: 151px; height: 41px; display: none;">
</div>
</a>
Maybe you can dynamically insert the div element with the <object> as its child. And when you want to show another svg, remove the previous div & insert a new div with updated svg.
Related
I have a good selection of SVG graphics on my site here
http://www.poipleshadow.com
They look crisp and I would love to continue using them, although I have a problem when i combine them with fallback for IE when they have links.
For example this is fine
<a href="index.htm">
<img src="Images/Poiple-Shadow.svg" width="32" height="32" alt="Poiple Shadow Charity Website" class="logo200">
</a>
But when I add the svg as an object and include a line for PNG support the link does not work anymore.
<a href="Goa-India-Map.htm" title="Goa Tourist Map">
<object type="image/svg+xml" data="Images/Buy-Items-To-Donate.svg" class="myimgleft">
<img src="Images/Buy-Items-To-Donate.png" width="200" height="156" alt="Give to charity - Donate to Street Children Charity" class="myimgleft">
</object>
</a>
I have searched and found that I could include the link in the SVG itself, although this means that the SVG would only link to a single address. Not ideal. Anyone know of a clean, basic, solution as I like to keep my site as basic as possible where ever I can just using HTML5 and CSS.
This is hacky, but I've used a trick from CSS Tricks in the past.
Unfortunately there's not a convenient anchor on that page to link to, but it looks like this:
.my-element {
background-image: url(fallback.png);
background-image: url(image.svg), none;
}
Apparently support of multiple backgrounds and SVG mostly overlap, so anything that doesn't support svg will use the top background-image while anything that does support svg will use the bottom. Clever, but like I said, hacky, and the best trick I know that doesn't use Modernizr.
CSS Tricks reports that "this works well in IE 6-8, but sadly not in Android 2.3 which supports multiple backgrounds but not SVG," so caveat emptor.
In reply to your comment below:
Your SVG looks like this right now:
<a href="index.htm">
<img src="Images/Poiple-Shadow.svg" width="32" height="32" alt="Poiple Shadow Charity Website" class="logo200">
</a>
In your stylesheet, you can add to class .logo200:
.logo200 {
background-image: url(Images/Poiple-Shadow.png); // make a png or jpg version of the image
background-image: url(Images/Poiple-Shadow.svg), none;
width: 32px; //give it width and height
height: 32px;
}
Now, instead of using an <img> tag, use a div:
<a href="index.htm">
<div class="logo200"></div>
</a>
The browser should show the SVG if it supports multiple backgrounds (and therefore svgs). If the browser does not support SVG, it likely doesn't support multiple backgrounds, so it will only show the first background-image property.
I have an unusual problem that's driving me crazy! I haven't found a question posted yet that pertains to this exact issue.
I have a page on my site where certain elements render incorrectly on random page loads. Using chrome for example, the page will render normally but after a number of refreshes a basic ul in the header will shift down into the body. Sometimes a carousel won't appear, or a navigation block will slide to the next row. I have duplicated this behavior on Firefox as well.
I can't really give a snippet of code for anyone to look at because I have no idea where the issue is originating from. The page with the issue is the index of www.Calibrus.com.
What's really amazing is that by using Chrome Dev Tools I can set display:none to the incorrect ul, then set display back to normal, and the ul renders where it should again. This suggests to me that the exact same html and css is somehow rendering differently (regardless of any scripts being used).
Also, this isn't an issue with the server. I have the same problem when running the code locally.
Does anyone have any idea whats going on here?
I believe the issue is tied to floats and the slideshow javascript.
Whenever I triggered the layout bug on the live site, it was accompanied by the first slide not rendering correctly. This would cause <div id="r1"> to have a height of 0 which in turn seems to aggravate the afore mentioned float bug. There seems to be some tension between the <ul> which is floated and the <a> which is not.
This is the solution that worked for me:
In index.html add a class (or ID if you prefer) to allow yourself to target the link within the CSS. In this example I have simply given it a class of logo:
<a class="logo" href="index.html">
<img src="images/Calibrus_logo.png" alt="logo" border="0">
</a>
Then, in your CSS:
// target the link using your chosen selector
.logo {
display: block;
float: left;
}
Once I added those rules, I could no longer replicate the rendering bug.
Side note:
I would recommend declaring your character encoding just after the opening <head> tag with <meta charset="utf-8">.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Calibrus</title>
Also, the border attribute for images has become obsolete. So rather than:
<img src="images/Calibrus_logo.png" alt="logo" border="0">
Simply target the <img> with CSS and declare:
.logo img {
border: none;
}
I'm working on a facebook tab that includes an iframe showing content from another website. I've narrowed the iframe down to only showing the part of the website that I want it to and disabled scrolling. In addition to that, I'd like to disable the links in the iframe content, and I've read that it should be possible by adding a transparent .png background image to a div containing the iframe and setting the iframe's z-index to -1, but the iframe is still in front of the image.
So far my css looks like this:
<style type="text/css">
iframe
{
z-index:-1;
}
.bgimg {
background-image: url('transparent.png');
}
</style>
and my html like this:
<div class="bgimg" style="overflow:hidden; width: 700px; height: 100%;margin:auto;">
<iframe src="http://www.url.com/site.html" width="1100" height="700" seamless="seamless" frameborder="0" scrolling="no" style="margin-top:-230px;"></iframe>
</div>
I'm using this to give a direct link to my amateur soccer team's league table, instead of manually having to update the tab each week with all the new information, but I don't want it to be possible to click on each team for team information - just the League table.
I've read several places that this should be possible, but haven't been able to find a functioning code - also read a few places saying it's impossible, and yet some others that say it can only be done using jQuery (which I know nothing about).
If anyone has any alternative solutions to what I'm doing now - please let me know.
Keep in mind that z-index only works for positioned elements (can be relative though.)
See: http://www.w3.org/TR/CSS21/visuren.html#z-index:
Applies to: positioned elements
I'm building a web site and I'm using HTML5. I'd insert into my header an img that is my company's logo. In terms of efficient and correctness it is better set up css propriety as background-image: url("logo.gif") in my css style or including in the html file
<header>
<img src="logo.gif" alt="logo" />
</header>
It is best to include the image as an img tag, not a background-image.
This means that if the client has disabled CSS on their browser, or it doesn't support CSS, they will still be able to see the logo at the top of the page.
This would also mean you could make the logo a link to the home page, which has become a general usability point for websites these days:
<header>
<img src="logo.gif" alt="logo" />
</header>
For more information on this sort of situation, see this popular StackOverflow post:
When to use IMG vs. CSS background-image?
that depends.
If your logo should be clickable then include it in the HMTL. (usebility)
If it is only present for design purposes go with the CSS.
It is generally a better idea to define everything related to the appearance of the Website in the CSS.
html:
<header>
<div id="company_logo"></div>
</header>
css:
#company_logo{
width:50px;
height:50px;
background-image:url();
}
Unless you need to have some contents over your logo, I'd go for the <img> tag (it is also screen reader-friendly provided you have the "alt" text).
Background images can not be printed, if your site has the purpose of being printed, then your logo won't display.
Remember that a logo is a content, and a background is a style. Using a background as a logo is not semantic.
Take a look at this page in FireFox. Feel free to navigate to any of the top six product categories to see more of the same type of code.
If you are [un]lucky enough to see the glitch, you will see at least one product box expand it's height to epic proportions.
Here is the code:
<div class="product_category">
<a href="../products/dht_1500.php" style="height: 340px;">
<h3>DHT 1500</h3>
(superfluous HTML omitted here)
</a>
</div>
Here is what Firebug reveals:
<div class="product_category">
<a style="height: 340px;" href="../products/dht_1500.php"> </a>
<h3><a _moz-rs-heading="" style="height: 340px;" href="../products/dht_1500.php">DHT 1500</a></h3>
(superfluous HTML omitted here)
<a style="height: 340px;" href="../products/dht_1500.php"> </a>
</div>
You can see FireFox is definitely closing my tags and re-opening them again, and pulling the custom CSS height style along with it, which is resulting in each product box height skyrocketing. Also note that strange _moz-rs-heading="" bit.
I suspect my problem has to do with my using block HTML elements within an inline tag, but I thought I solved that problem by converting the tags to block formatting in my stylesheet:
.product_category a {
display: block;
}
FireFox is playing favorites to my tags. It usually renders the page like I want it, but then every once-in-a-while, it will blow one of my product boxes sky-high, and seemingly at random.
The pages work properly in Internet Explorer and Safari. I have been testing it with FireFox 3.6 on Mac, but have seen the same problem on FireFox for PC.
Having block level elements (h3) inside an inline element (a) is not valid HTML.
Change your block elements to a span and use CSS to style it how you wish.
A similar question with the exact same symptoms was asked a few days back. The solution there was in fact taking the native block elements out of the natively inline ones. Seems changing display doesn't help in this case.