I have a mix-blend-mode for one of my images that works perfectly on firefox and chrome, but not on safari. The overlay is on a CSS slider I have and I found transform messes up the mix-blend-mode property. How do I avoid having the transform interfere with the css styling.
I am using the Swiper Slider
Below I placed my code and exactly how it should look. The final result should look like this:
section {
position: relative;
will-change: opacity;
}
section::after {
background-color: #3b5873;
border: 33.325px solid #c4ae7e;
content: '';
display: block;
height: calc(100% - 66.65px);
position: absolute;
top: 0;
width: calc(100% - 66.65px);
}
.container {
background-color: #fff;
height: 100%;
width: 100%;
position: relative;
mix-blend-mode: luminosity;
z-index: 9;
}
.image-bg {
background-size: cover;
padding-top: 59.08%;
}
<section>
<div class="container">
<div class="image-bg" style="background-image:url('http://dev-thepaxton.pantheonsite.io/wp-content/themes/paxton-theme/dist/images/home/gallery_0.jpg')"></div>
</div>
</section>
Unfortunately, mix-blend-mode is not supported for Safari/WebKit SVG elements:
https://caniuse.com/#feat=mdn-css_properties_mix-blend-mode_svg
Related
I have a DIV with "width: 100%", and after some time it moves to a different width (for example "width: 50%") with a nice transition. I want that the part which is going to decrease to get a different color. How do I do it?
.container {
width: 80%;
height: 50px;
}
.bar {
background-color: red;
width: 100%;
height: 100%;
transition-duration: 1s;
}
<div class="container">
<div class="bar"></div>
</div>
You can simply put another bar exactly behind this bar. Set it's z-index to 1. And your current bar's z-index to a higher number.
The bar that is in the back, has a black color like you wanted.
Now when the red bar decrease it's width, the one in the back becomes visible.
Here you go, the most basic working example.
(Try hovering the bar and see it moving)
By simply overlaying a pseudo-element over the static .bar element, with position:absolute, it is places above the bar and has dynamic width which you should change.
.container {
width: 80%;
height: 50px;
}
/* static background bar */
.bar {
--progress: 80%; /* css variable */
position: relative;
background-color: salmon;
width: 100%;
height: 100%;
}
/* This is the part which moves: */
.bar::before{
content: '';
background-color: darkred;
position: absolute;
top: 0; right: 0; bottom: 0; left: 0;
width: var(--progress);
transition: 1s;
}
.bar:hover {
--progress: 20%;
}
<div class="container">
<div class="bar"></div>
</div>
This solution uses a linear-gradient where I animate the background-size. I placed a fully black gradient on the .container, and a red one on the .bar, where I put a transition: background-size 1s on the black .container.
By using javascript to change a CSS variable, I can get the bar to animate.
Added a range to show-case the result.
Do note that it's always better to specify what attribute to animate with transiation, because otherwise the browser loops through all animatable properies, which can create janky animations.
let rangeInput = document.querySelector('input[type="range"');
let containerDiv = document.getElementById("container");
if (rangeInput) {
rangeInput.addEventListener('change', (event) => {
let newValue = event.target.value;
containerDiv.style.setProperty('--bar-width', `${newValue}%`);
});
}
input[type="range"] {
width: 80%;
margin-top: 1rem;
}
#container {
--bar-width: 100%;
width: 80%;
height: 50px;
background: linear-gradient(black, black);
transition: background-size 1s;
}
/* added "div" to obtain a higher specificity, to override the default background properties. */
div#container,
div.bar
{
background-repeat: no-repeat;
background-size: var(--bar-width);
}
.bar {
background: linear-gradient(red, red);
width: 100%;
height: 100%;
}
<div id="container">
<div class="bar"></div>
</div>
<input type="range" value="100" />
When setting a background gradient to background-attachment: fixed it is suddenly cropped to 50% of the page width. It seems related to the position left: 50%. I wonder if this is a bug or if I'm using the CSS wrong here:
.container {
position: relative;
height: 80px;
margin: 10px 0
}
.container:before {
content: '';
position: absolute;
top: 0;
bottom: 0;
width: 100vw;
background: #f0f0f0;
background-image: repeating-linear-gradient(315deg,rgba(0,0,0,.03),rgba(0,0,0,.03) 10px,rgba(0,0,0,.06) 0,rgba(0,0,0,.06) 20px);
left: 50%;
transform: translate(-50%);
}
.container.fixed-bg:before {
background-attachment: fixed; /* <-- This line causes the problem. Why? */
}
<div class="container">...</div>
<div class="container fixed-bg">...</div>
I know that I can bypass the issue by removing the styles left: 50%; and transform: ... but that's not a practical solution in my case. The container has an unknown left margin and the pattern needs to reach from edge to edge.
Does that mean my CSS is wrong? What CSS would display the fixed background pattern in full width?
Update
I notice that there is a different behavior across browsers:
The bug seems to be related to transform. Use margin instead
.container {
position: relative;
height: 80px;
margin: 10px 0
}
.container:before{
content: '';
position: absolute;
top: 0;
bottom: 0;
width: 100vw;
background: #f0f0f0;
background-image: repeating-linear-gradient(315deg,rgba(0,0,0,.03),rgba(0,0,0,.03) 10px,rgba(0,0,0,.06) 0,rgba(0,0,0,.06) 20px);
left: 50%;
margin-left:-50vw;
}
.container.fixed-bg:before{
background-attachment: fixed;
}
<div class="container">...</div>
<div class="container fixed-bg">...</div>
I use this loader spinner using css and jquery. I would like to blur the background exept the image from URL. Any idea ?
Css:
.no-js #loader { display: none; }
.js #loader { display: block; position: absolute; left: 100px; top: 0; }
.se-pre-con {
position: fixed;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
z-index: 1;
background: url("http://enjoycss.com/bg-img/custom/107898-1py1ieu.1zm9.gif")
center no-repeat #33333308;
}
Js
<script>
$(window).load(function() {
$(".se-pre-con").fadeOut("slow");;
});
</script>
Thank you
When the gif is showing you can add a :before pseudo-element to the body. The blurry effect can be tricky to achieve, I'd recommend using a blurry PNG or a svg as background, in the snippet below I'm just using color:
body:before{
content:'';
background-color: #dbdbdb;
opacity: 0.7;
background-size: cover;
width: 100%;
padding-bottom: 100%;
position: fixed;
z-index: 1;
}
You can replace the body selector with a class and then with some jQuery remove or add the class to the body.
See this fiddle for reference: https://jsfiddle.net/3r1zc9gw/3/
Lets assume I have a div with a Gradient applied as a background-property.
I now want to overlay a black PNG (of smaller size) and set the PNG to have a background-blend-mode of overlay. Unfortunately I have no idea on how to achieve this.
I know I can have a working background-blend-mode when I render the Gradient into the CSS of the Div with the PNG image like:
background: url(../img/plus.png), linear-gradient(to bottom, #24cae4 0%, #1f81e3 100%);
background-blend-mode: overlay;
This however results in the Gradient being as small as the actual PNG, which is not a desired effect, like this:
What I want to achieve is this with pure CSS (if possible):
Here a Codepen to illustrate what I'm trying to do: http://codepen.io/anon/pen/zxOXGP
Notice the Black Icon. I wanna overlay this.
Try using mix-blend-mode instead of background-blend-mode and switch to simple text for the plus-sign or a webfont for more custom figures.
Example Codepen of the below:
.placeholder {
position: relative;
width: 400px;
height: 300px;
background-image: -moz-linear-gradient(#ff0000, #0000ff);
background-image: -webkit-linear-gradient(#ff0000, #0000ff);
background-image: linear-gradient(#ff0000, #0000ff);
}
.center {
position: absolute;
top: 25%;
width: 100%;
font-size: 120px;
}
.center span {
display: block;
text-align: center;
color: red;
mix-blend-mode: screen;
}
<div class="placeholder">
<div class="center"><span>+</span>
</div>
</div>
The gradient sandwich
Ingredients
The :before forms the bottom z-layer with z-index: 1, it is full opacity
The .content div forms the filling, central z-layer, with z-index: 2. It needs position: relative to take its z-index.
The :after forms the top z-layer with z-index: 3 and completes our lunch item. It is half opacity.
This is the tasty result:
Full Example
I have removed all but the standard CSS3 gradient for simplicity. View in a supporting browser.
.gradient {
position: relative;
height: 200px;
padding: 20px;
}
.gradient:before,
.gradient:after {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
content: '';
display: block;
background-size: 100%;
background-image: linear-gradient(to bottom, #24cae4 0%, #1f81e3 100%);
opacity: 0.5;
}
.gradient:before {
opacity: 1;
z-index: 1;
}
.gradient:after {
z-index: 3;
}
.overlayed_image {
position: relative;
width: 64px;
height: 64px;
display: block;
margin: auto;
background-size: contain;
background-repeat: no-repeat;
background-position: 50% 50%;
background-image: url(http://cdn.flaticon.com/png/256/9029.png);
}
.content {
position: relative;
z-index: 2;
}
<div class="gradient">
<div class="content">
You can see me!
<div class="overlayed_image"></div>
</div>
</div>
I'm having an issue with the pseudo-class :hover in Google Chrome.
Basically I have an element that when in :hover state it's sibling is displayed. This works fine.
Then I add a media query so that when the viewport has a specific min-width the element is no longer displayed but the sibling is.
When going from the min-width to a smaller width the display:none on the sibling no longer fires.
It might be easier to understand by taking a look at this example. Try resizing the viewport.
http://jsfiddle.net/5gPGR/1/
HTML
<div id="container">
<div id="trigger">
</div>
<div id="target">
</div>
</div>
CSS
#container {
position: absolute;
display: block;
top: 0;
left: 0;
width: 100%;
height: 80px;
padding: 24px;
line-height: 80px;
background: #777;
box-sizing: border-box;
}
#trigger {
position: absolute;
display: block;
width: 50%;
height: 80px;
top: 0;
right: 0;
background: #275;
}
#target {
position: absolute;
display: none;
width: 50%;
height: 80px;
top: 0;
left: 0;
background: #f57;
}
#trigger:hover ~ #target {
display: block;
}
#media screen and (min-width: 400px) {
#trigger {
display: none;
}
#target {
display: block;
}
}
This is only an issue in Chrome/Chrome Canary. I have tested in the latest versions of:
Chrome
Chrome Canary
FF
IE
Safari
Opera
Is there something I can do to resolve this or do I just need to stick with javascript for these kinds of interfaces.
EDIT:
I forgot to mention that if I force the element state to :hover using chrome dev tools it starts working again until the next resize.
Interesting error, I'm not sure why that happens
I was able to fix the issue by adding an empty #target:hover { }
Demo
If you're using a preprocessor that would remove this line, you can add a property that you already have, like #target:hover { display:block; }