I've noticed that Firefox isn't displaying an SVG logo on this page - http://silodrome.com - It works in IE10+ as well as Chrome and Safari without any issue. The CSS being used for the logo is;
a#logo, a#logo:visited {
width: 90%;
max-width: 350px;
margin: 45px 0 10px 0;
display: inline-block;
position: relative;
z-index: 0;
}
a#logo img {
width: 100%;
height: auto;
}
a#logo:hover {
opacity: 0.75;
}
And the HTML being used on the page is;
<li><img src="http://silodrome.com/wp-content/themes/silodrome/img/logo.svg" width="" height="" alt="Silodrome" /></li>
I've been Googling this relentlessly but I can't find a solution, any advice would be greatly appreciated, I can provide more information if needed. This is a new custom Wordpress theme.
Removing display:table-cell property from #topLinks li{...} seems to display the svg properly in firefox but the RSS feed button gets pushed upwards !
There is nothing wrong with the SVG but the problem lies with the display property !
Will post a right solution soon :)
For one thing, you've explicitly set the width and height attributes of the SVG-containing img to 0. Even if you had these set to the correct sizes, using the attributes is bad practice. However, I think Firefox is ignoring this anyway; at least I can't make the image re-appear by using the dev tools to change the attributes.
I think your problem is that the SVG never reports is size. You define the viewBox in the SVG file, but not the image dimensions. So Firefox's table-cell sizing algorithm shrinks it as small as it can get: 0px × 0px.
Solutions are either to specify the size on your HTML page in CSS, or to give it the image itself a width or height. (Or, of course, do both.)
Related
My website hosts a lot of images of all sizes. These images are responsive and change size at all browser widths from desktop to mobile. I see in my Google Search Console that I have a poor CLS (cumulative layout shift) of .25s. The layout of my website shifts as the images load.
Since my images are responsive, I can't specify exact sizes of the images, or have placeholders to reserve the space.
What is a modern way to prevent CLS with responsive images?
Layout here: https://jsfiddle.net/exspwgab/
Update: I tried one suggestion on the internet which is to specify the image file's width and height within the img tag like:
<img src="photo.jpg" width="1504" height="752">
And then in CSS you do:
width: 100%;
height: auto;
This didn't seem to work in any browser. And the elements on my webpage still moved all over as the images loaded.
If anyone has a solution that works in all browsers please let me know. I essentially need placeholders to hold the space while the images load to prevent the page jank issue.
JSFiddle of my responsive layout here:
https://jsfiddle.net/exspwgab/
I am not sure if this is exactly "a modern solution" to the CLS issue but just trying to be helpful as much as I can.
Obviously, it's not logically possible to put constant-sized placeholders for the responsive image elements. What if we use placeholders/elements with fixed-sizes for the responsive contents?
For example:
img.placeholder-image {
width: 100%;
height: 256px;
object-fit: contain;
}
With the fixed-height, this element won't add up anything negative to the CLS policy while keeping the whole image content inside the element itself even if the viewport gets resized.
I'd very much suggest you consider using <div>s instead of <image> elements to display image contents (using background property), however, I can't vouch that's not another violation of audit rules.
My two cents.
HTML:
<img width="300" height="450" src="300x450.jpg">
CSS:
img {
height: auto;
aspect-ratio: 2/3;
max-width: 100%;
}
Target browsers:
Chrome 88+
Edge 88+
Articles:
MDN
Caniuse
I had absolutely same problem.
Solution is change width: 100% to max-width: 100%
this is implicitly stated on https://web.dev/optimize-cls/
img {
width: 100%; /* or max-width: 100%; */
height: auto;
}
If you need to do what you're doing... don't worry about it.
Tools that identify potential problems with your site don't know the context. For example, suppose my site had a huge 20 MB image that took several seconds to load. Google's tools would undoubtedly flag this as a problem. But, maybe in my example, my site is hosting scientific imagery or something that requires a lossless large image size. My users would happily spend a few seconds loading the data they need.
If the layout of your site requires that you load images that are then resized dynamically, then that's what it requires and you shouldn't worry about it.
I ended up using the solution found here:
http://davidecalignano.it/lazy-loading-with-responsive-images-and-unknown-height/#:~:text=And%20here%20is%20the%20formula,flashes%20on%20lazy%20loaded%20images.
HTML
<a class="thumb lazy-container" href="#">
<img class="lazy" data-original="image.jpg" alt="">
</a>
CSS
.lazy-container {
display: block;
position: relative;
height: 0;
}
.post .lazy-container {
padding-bottom: 55.3%;
}
.lazy-container img {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
Since all of my images have a different height, I put the padding-bottom percentage as an inline style for each image.
EDIT: had originally said the wrong iOS version (it's basically the latest, 9.3.5)
EDIT: thanks to the kind soul who edited the question to include the snippet.
not sure why my chrome browser is not allowing editing of snippets in the question editor anymore.
First up:
I tried to make a stack snippet for this question, but unfortunately the snippets editor is not allowing me to edit any code in chrome on a chromebook. I'm not entirely sure why stack overflow don't just write a simple importer that converts a jsfiddle link into the stack snippet format. If the editor does not work, I am forced to resorting to much maligned cut and paste code and link question format.
Anyway the link for my fiddle is https://jsfiddle.net/vwm2opf7/1/
A "full screen" link for that fiddle is
https://jsfiddle.net/vwm2opf7/1/embedded/result/
(because my issue is a mobile web issue it's best just loading that second link to observe the problem).
The code portions are here
html {
font-size: 16px;
font-family: Arial;
}
body {
overflow: hidden;
}
#div_page_header {
position: absolute;
top: 0;
left: 0;
right: 0;
height: 140px;
color: #FFFFFF;
background-color: #102339;
}
#div_image_banner {
position: absolute;
top: 10px;
left: 10px;
right: 10px;
bottom: 10px;
}
#img_banner_pic {
width: 100%;
height: 100%;
object-position: top left;
object-fit: contain;
}
<body>
<div id="div_page_header">
<div id="div_image_banner">
<img alt="logo" src="http://www.graphicdesignbylisa.com/wp-content/uploads/generic-logo.jpg" id="img_banner_pic">
</div>
</div>
</body>
What I'm expecting it to see the logo graphic auto scaled,and inset 10px from the top left hand corner, and scaled to fit vertically to 10px from the bottom of the blue box, with the aspect ratio retained. basically exactly like this:
now in chrome on the desktop, it behaves correctly
on android chrome, it behaves correctly also.
using any browser (eg safari, chrome, opera, even the lastpass browser) on an iphone 4S running iOS 9.3.5, you get the logo image centered in the blue panel.
I'm assuming it a webkit issue.
I'm after a css-only solution to correctly position the logo, with scaling.
The reason for the 2 div approach, is i have found (in desktop at least) the only way to get the object-position to work correctly with an inset is to do this which then allows 100% to be used for width and height. even a calc (100%-20px) does not work properly. the reason for the inset is i'm using media queries to fine tune positioning for different sized screens. (not in this example, but i prefer to reduce example code to the bare minimum to show the problem, as in doing this it reduces complexity, and often I find the solution before finishing the question)
Yes, Safari 7.1-9.1 support object-fit but not object-position (see object-fit on caniuse)
No way around it other than using a polyfill like object-fit-images that will also fix object-fit in IE9+
I developed different responsive boxes for the news in the website I'm working in. And everything seems to be working fine except for the news inside the slider on the top of the main content. It displays properly in Chrome, Opera and even in Internet Explorer, but not in Firefox. The problem seems to be in the article elements, specifically in the following lines of CSS code:
.home .first-level-post {
margin: 0px;
width: 100%;
padding-top: 45.1613%;
}
It's supposed to have a height of 280px, that's why I chose 45.1613% as its value. The container's width is of 620px, and it's 45.1613% is 280px.
When I switch the padding-top property off, it takes the 93.3333% value which belongs to the article elements present outside the slider (which are 300px wide), displaying as it should, but that value does not work in the other browsers.
I've been dealing with this for a while I can't seem to find a solution.
You can properly check this issue right here.
Thanks in advance, guys :)
Firefox is interpreting your padding based on a height of 0 due to inheriting from your .home article class.
Changing your CSS to this seemed to fix the issue for me in Firefox and not have an adverse effect in Chrome:
.home .first-level-post {
height: 100%;
margin: 0;
padding-top: 45.1613%;
width: 100%;
}
http://www.dirkdunn.com/web2
I recently made a responsive layout, setting the..
max-width:100%;
property in google chrome, which works perfectly for adjusting the header image size, however, in other broweser's such as firefox, the image overlaps the parent container on the left size.
I am familiar with scott jehls picture.js polyfill, however specifying the image size for each screen size sounds like a headache inside the picture tags, is there any way to combat this in other browsers similarly to how google chrome resizes this naturally?
or at the very least, is there some kind of math formula for knowing the right picture size via the browser width? thanks.
You have set the max-height of img to 100%, however you don't have the width of it's parent defined. So, it becomes confusing to the browser to determine 100% of what thing.
Let's give the parent a width -
#headlogo {
width: 100%;
}
Also set the margin accordingly, you might wanna use margin: 0 for #headlogo.
Simply remove the h1-parent of the image and it works. (FF 32)
Try this one
max-width: 100%;
display:block;
height: auto;
Assuming you are trying to center the logo.
I would remove the float: right from the H1 and remove the margin you have. Than I would add a text-align: center to the H1. This will solve your responsive logo issue and keep the logo centered.
Your Current CSS
#headlogo {
float: right;
margin: 0 15% 0 0;
}
Proposed Solution CSS
#headlogo {
text-align: center;
}
I'm certainly no CSS guru, but I am working on a problem where I'd like to make copying of images just slightly more burdensome for users. Sure, they can still easily be retrieved, but this makes it so you can't just drag/drop them on your desktop. Basically, I had a bunch of markup like this:
<img width="400" src="my image.png" class="foo" alt="foo">
Instead, I decided to put this into a background image and change the element to a div:
<div width="400" class="foo">
The problem I have is that the images have a fixed width, but a variable height. This worked excellent when I was using an img tag. It doesn't have the same behavior when I use a div tag. Instead, the CSS is requiring me to force a height property to display anything at all:
This doesn't work
.foo {
display: block;
margin: 0;
padding: 0;
width: 400px;
background-image: url(myimage.png);
/* height: 200px; */
}
This sorta does:
.foo {
display: block;
margin: 0;
padding: 0;
width: 400px;
background-image: url(myimage.png);
height: 200px;
}
The problem is the height for the images are all variable as I mentioned before. So it tiles over and over if I hard code a size. The container can be a placeholder for well over 5,000 images, so setting it by hand won't do it. If I can get this div to behave exactly like the img tag did, the problem is solved.
If you are just trying to prevent people from clicking and drag/dropping, I would say put each img into it's own div with position: relative. Add another div inside that relative div that has the following style:
div.img_box {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: none;
z-index: 9999; /* or anything higher than your img's z-index */
}
That will cover up the image with a transparent div.
That way the image (which is part of your content) is still syntactically correct in the html.
Everybody is of course correct in saying that they have already downloaded the images to their computers just by visiting the site.
If you're trying to prevent users from reusing your content easily, some good methods are to:
1. Use images with lower resolution to limit reuse potential
2. Watermark your images
3. A combination of both, in an image sprite.
Hacking at it will just be ugly, ineffective, and difficult to maintain.
You are just setting the background of the div, you aren't adding an image to the div. The div can be resized to whatever it won't resize to what it's background image is. Just use the tag.
The only thing you could do with CSS is add a height which would work for all images. So if you're images range from 200-250px in height, set the div to 250px. Otherwise, you'll need javascript or server-side scripting to determine the height of the image and set the the CSS.