optimize shadow rendering - html

Do you have any ideas how to improve shadow rendering performance?
whenever, I apply
-webkit-box-shadow:
-moz-box-shadow:
box-shadow:
The browser resource usage dramatically increases.
I draw div shadow working with transform().
From my testing, Chrome performs fastest compared to Firefox and Safari. For IE and the rest browsers, I have not tested yet.

Try this
-webkit-box-shadow: 10px 10px 5px #888 !important;
-moz-box-shadow: 10px 10px 5px #888 !important;
box-shadow: 10px 10px 5px #888 !important;

Related

CSS box-shadow weirdness in Firefox

I have a weird issue when using box-shadow to apply a padding to the left and right side of a span which has its contents wrapping inside a container:
box-shadow:9px 0px 0px red, -9px 0px 0px red;
It applies the left shadow only to the first line, and the right shadow only to the last line.
http://jsfiddle.net/3zeL5ux8/2/ is a testcase that works as expected in Chrome and various IE versions (see http://imgur.com/XhX1kco for a perfect rendering), why does Firefox mess it up?
you can try:
-moz-box-shadow:9px 0px 0px red, -9px 0px 0px red;
let me know the output. Can't debug right now.
Cheers
You have to use all different box shadow property for all broweser, try following code :-
-moz-box-shadow: 9px 0px 0px red, -9px 0px 0px red;
-webkit-box-shadow: 9px 0px 0px red, -9px 0px 0px red;
box-shadow: 9px 0px 0px red, -9px 0px 0px red;
The answer is a property called box-decoration-break: clone;. This brings Firefox up to speed with IE and Chrome...

How to get glowing effect with css

Whats the best way you would suggest getting a glowing effect around a div of text? Can it be done through CSS?
I tried playing around with the box-shadow but couldn't quite get it how I wanted it.
You're looking for text-shadow - see http://caniuse.com/#feat=css-textshadow for info on what browsers support it, and the "Resources" tab there for links about how to use it
I think you want something like this:
-webkit-box-shadow: 0px 0px 19px -1px rgba(0,255,81,1);
-moz-box-shadow: 0px 0px 19px -1px rgba(0,255,81,1);
box-shadow: 0px 0px 19px -1px rgba(0,255,81,1);
Just play around with the controls at http://www.cssmatic.com/box-shadow until you get what you want.
div {
-webkit-box-shadow: 0px 0px 19px -1px rgba(0,255,81,1);
-moz-box-shadow: 0px 0px 19px -1px rgba(0,255,81,1);
box-shadow: 0px 0px 19px -1px rgba(0,255,81,1);
}
<div><p>Text</p></div>

How to put a shadow in all four sides of an image? [duplicate]

This question already has answers here:
How to apply box-shadow on all four sides?
(15 answers)
Closed 8 years ago.
I need to know how to put shadow in all four sides of a div. I need a little explanation of:
filter:
progid:DXImageTransform.Microsoft.Shadow
This will give you shadow on all 4 sides:
div.shadow {
-moz-box-shadow: 0px 0px 10px #000;
-webkit-box-shadow: 0px 0px 10px #000;
box-shadow: 0px 0px 10px #000;
}
JSFiddle
The first two 0px's mean that the shadow won't explicitly protrude either left/right or up/down. The 10px gives it enough blur to protrude out all edges. The #000 is the color of the shadow. You can play around with it to get the look you like.
Use box-shadow
.class-name{
box-shadow: 2px 2px 2px #000;
/* horizontal, vertical, blurr-radius, colour */
}
Box-Shadow
CSS3 box-shadow property has following attributes: (W3Schools)
box-shadow: h-shadow v-shadow blur spread color inset;
The main prefix for shadow to support latest browsers is box-shadow.
There are 2 other prefix available that I recommend to use for older Mozilla and Webkit:
-moz-box-shadow
-webkit-box-shadow
Try it:
img{
-webkit-box-shadow: 0 0 5px 2px #000000;
-moz-box-shadow: 0 0 5px 2px #000000;
box-shadow: 0 0 5px 2px #000000;
}
Working Demo
Reference

Image shadow css3

This is the top of the sketch of my website, I've done this in a HTML editor.
The circle we can see in the image is my logo, it's an image with alpha color background.
Shadows, borders, etc are working perfectly even in IE.
Now I'm trying to do something similar with HTML5 and CSS3 but I'm having lots of problems with image shadows and borders.
box-shadow doesn't work because it's a square image (remember it's a image with alpha color background)
The last thing I've found for image shadow is filter: drop-shadow. In theory it should work on all browsers but it's only working with chrome.
On the other hand, i can't get a border like the one on the picture. As you know, my logo is a image with alpha color background and it always makes a square border.
Can anybody give me some help. I would appreciate it. Thanxs
After using the solution Lloan Alas gave me it's working perfectly but not on mobile phone
I use dolphin browser and this is what i get:
This is my code: css:
#logo {
margin-top: -100px;
height: 188px;
width: 300px;
background-image: url("../imagenes/logo.png");
border: 5px solid white;
border-radius: 50% ;
box-shadow: 0 10px 15px #000;
-moz-box-shadow: 0 10px 15px #000;
-webkit-box-shadow: 0 10px 15px #000;
-ms-box-shadow: 0 10px 15px #000;
-o-box-shadow: 0 10px 15px #000;
-khtml-box-shadow: 0 10px 15px #000;
}html:
<div id="logo"></div>
Here is a live demo - Let me know if it helps! LIVE DEMO JSBIN
Compatible with IE 9-10, Firefox, Safari and Opera. (Supposedly)
I don't get very well what are you looking for, but if you want to add a shadow to that ellipse what you need is box-shadow, as you know
The use is:
box-shadow: horizontal-shadow-position v-shadow-pos blur spread color inset;
where you can ommit a property but you cannot change its order.
So for instance your shadow will be something like
box-shadow: 3px 3px 8px 2px #666;
because it's not inset.
In addition, to be able to use it in more browsers, you will need the browser prefix, such as
box-shadow: 3px 3px 8px 2px #666; /*Firefox (and new versions of Opera)*/
-o-box-shadow: 3px 3px 8px 2px #666; /*Opera*/
-ms-box-shadow: 3px 3px 8px 2px #666; /*Internet Explorer*/
-webkit-box-shadow: 3px 3px 8px 2px #666; /*Webkit: Safari, Chrome, Chromium...*/
Also, remember that the alpha-filter you mentioned is just the equivalent to opacity property for Firefox, Chrome, Opera, ...

How to do CSS3 boxshadow on 2 sides of a div?

Please take a look at this simple code:
http://jsfiddle.net/kerp3/
The box has an inner box shadow o all 4 sides. I need the box shadow to only appear on the left and bottom sides.
How to change this code:
box-shadow: inset 0 0 9px 0 #000;
Does this help, this should work cross browser.
.shadow {
-moz-box-shadow: 3px 3px 4px #000;
-webkit-box-shadow: 3px 3px 4px #000;
box-shadow: 3px 3px 4px #000;
/* For IE 8 */
-ms-filter: "progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#000000')";
/* For IE 5.5 - 7 */
filter: progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#000000');
}
Here is the original author :
http://robertnyman.com/2010/03/16/drop-shadow-with-css-for-all-web-browsers/
.shadow {
-moz-box-shadow: 5px 5px 5px #ccc;
-webkit-box-shadow: 5px 5px 5px #ccc;
box-shadow: 5px 5px 5px #ccc;
}
See this page:
http://css-tricks.com/snippets/css/css-box-shadow/
With a small change to the color and the offsets it becomes fairly simple:
div { width: 300px; height: 300px;
box-shadow: inset 5px 5px 5px -3px #666;
}
The jsFiddle of it.
I was going to suggest using negative values like so:
div { width: 300px; height: 300px;
/* Try this. */
box-shadow: inset 4px -4px 7px -4px #000;
}
The first 4px pushes the shadow box to the left by 4px, hiding what you would normally see on the right, if you left it at 0.
The second -4px value pushes the shadow vertically down, again hiding the top shadow.
The higher 7px blur value gives me a more than a I need, but if I add a spread of -4px, that extra blur will be clipped. Leaving only a soft grey shadow edge, instead of the hard black one you'll usually see.
See my example here:
http://jsfiddle.net/khalifah/vVUB5/
You can't apply a shadow only to certain sides of a <div>, but you can adjust the X and Y offsets so that the shadow gets clipped on the sides where you don't want it.
This gave me the effect you're looking for in Safari:
box-shadow: 7px -7px 9px #000 inset;