Is it possible to hide lower div background fully?
I have two fixed position divs with shadow - semi transparent background so they overlap and become darker.
Is there a way - in Adobe Air - to make the lower div's background fully hidden?
Not sure if this helps or what you mean by "in adobe air" but can you not position the background of the second div to start further down with css eg
.div2 {
background-position: 0 50%;
}
Or you can move it down a set number of pixels maybe.
read more about bg positioning: w3c schools
If you want to hide the seconde div why not use jquery to hide it?
$("div1.class").hide()
Related
I have a button with perfectly rounded corners; meaning, the button is 50px high and the border radius is 25px, making a perfect half-circle on either side of the button:
Achieving this with CSS is easy, provided you already know the height of the button (button height รท 2 = border radius).
But is it possible to maintain the perfectly-circular edges if the button's height increases dynamically (more text is added, for example)?:
Just set the border-radius to something high, like 360px.
div {
height:50px;
width:500px;
background:red;
border-radius:360px;
}
Look at this jsFiddle example to see what I mean.
I have two columns that can stretch to variable heights, the designer wants to have a shadow between the two columns, but as you can see the image fades out at the top and the bottom. That means I can't just use a background image using css that is left aligned in the column on the right.
So then I though maybe I can use a css 3 border shadow that has a radial gradient. I am probably going to use table cells to do this because I need the shadow to stretch to the height of the tallest column. How do I do this?
Previous answers doesn't really answer your question: "How do I create a radial css3 border gradient shadow"
You can use a radial gradient to simulate a border shadow without images.
Demo: http://jsfiddle.net/sonic1980/wRuaZ/
background: -webkit-radial-gradient(50% 0%, 50% 5px, #aaa 0%, white 100%);
| | | |
| | | +--> color end
| | +--> color start
| +--> size of gradient ellipse (x-axis, y-axis)
+---> position of ellipse center
It's easy to modify to make it vertical or implement using :before or :after pseudo-classes.
Another example, an <hr> tag with shadow: http://jsfiddle.net/sonic1980/65Hfc/
i have a suggestion that you do not need use css3, you may use two different class, one is normal, and other has background. And when loading page finish, and call js method, settimeout to dely some seconds, toggle class.
I think I am just going to use the image, and set a min-height on the div :-)
.column.right {
padding-left: 30px;
background: url(/img/shadow.png) no-repeat left top;
min-height: 265px;
}
Another solution would actually allow for a dynamic height column, but it only has IE8+ support.
What you'd do is apply a background-image positioned to the edge of the tallest column. Then you could use the :before and :after pseudoelements, set to absolute positioning of top:0; and bottom:0 respectively, to set the 'cap' on the shadows.
Does that make sense? Here's a JSFiddle that shows it using a border and text, instead of images.
Of course, the height parameter of the div in the JSFiddle is of no consequence; it could be min-height or nonexistent. I just set it to give the div some size.
I would like to fix my background to 100% height of body and leave it there even when rest of the page scrolls.
How do I achieve this?
Right now all I have is background:url(bg.png);. The height of the image is 1200px and width 20px, if that matters.
in css, use this:
background-attachment: fixed;
Depending on what you want the background image to do there are a couple of options. There is a great article on ALA about full screen BG images that accounts for scaling:
http://www.alistapart.com/articles/supersize-that-background-please/
If you are just looking to position the image in the browser you would do:
background:url(bg.png) no-repeat top left;
background-attachment:fixed;
Or however you want to position it respectively (top right, etc.)
Some browsers still have trouble supporting the stretching of background images so here's a workaround.
CSS3 Example and Support
Since it's already 1200px, you can use background-attachment:fixed; on the background to make it follow when they scroll. Example at w3schools. You can make the image look like it is meant to flow into a solid color at the bottom with a nice gradient, etc.
I need to place an icon of 48x48 as background. I have this icon in my image sprite where of course there are many other images.
Is there a way to show as background only a porition of the image?
thanks
EDIT: Is there a way to do this without setting width-height of the backgrounded element? (I am not sure if acutally i can set a width-height)
Edit2: this is what i need: http://jsfiddle.net/pdxnj/
Thanks
Set the width and height of the element to 48px.
.element{
width: 48px;
height: 48px;
}
Set the background of the element to your image
.element{
background-image: url('image.png');
}
Move the background so that the top left corner of the icon is positioned correctly.
.element{
background-position: 20px 94px;
}
The two numbers in background-position are the X and Y coordinates (respectively) where the top left corner of your 48px by 48px is in your sprite image. So maybe it's actually 96px 0px or something.
EDIT
If you can't control the width and height of the element you are trying to put the background in, but you can add new DOM elements, you can try adding a span inside the element you really want to put the image as a background for.
It would look something like:
<div id="noControl">
<span id="justCreated">
</span>
</div>
and the CSS would look exactly the same as above, except you would need to treat the inline span as a block element:
#justCreated{
display: inline-block;
}
EDIT 2
If you have control over new DOM elements, and want to make your sprite the background without messing with a span, just add another div inside your original one.
Would wind up looking like:
<div id="noControl">
<div id="justCreated">
ALL of the content that used to be inside #noControl
</div>
</div>
and the CSS for it would be
#justCreated{
width: 48px;
height: 48px;
background-image: url('image.png');
background-position: 96px 0px;
z-index: -200;
/* z-index of all the contents needs to be not set, or set to larger than -200 */
}
This is all theoretical, but it SHOULD work.
This way, you can apply the sprite sizing to a block element without messing with the inline stuff. This may affect CSS if it addresses elements by child status (like #noControl > a), because you are inserting a div between the parent and the child.
I am still researching whether you can do this at all if you have no control over the DOM at all.
simple answer no, but by using html elements you can. Html element hight and width should match the background portion of image.
You can if you're not going to be setting a repeating background. Otherwise no.
To do this, you need to play around with the background offset, and width/height of the actual element that you're setting the background on.
it will depend on how much whitespace is around it in the sprite whether it will fit where you need it to without showing parts of other images.. however you could e.g. put a span where you want the image and crop the span to 48x48 so that it only shows the icon itself. it kind of depends what you want to use it for and how the sprite is built
It's better using ::before or ::after so you can easily define your image size without having overflow problems!
This is possible. You need to display that in a 48x48 div then set position: absolute style for the div and define left and top too for it. Also set z-index: 0 for the div so that it appears under everything.
Is it possible that I can create a margin/padding between the background image and container that holds the image? In other words, I need to move the background image sprite_global_v3.png 20px to the right of the left border of #nav-primary.
Here the position "0 -470px" are used to pick the right picture from sprite. And I don't know how to apply a padding/margin of 20px in order to achieve what I expected.
#nav-primary {
background:url("http://static02.linkedin.com/scds/common/u/img/sprite/sprite_global_v3.png") no-repeat scroll 0 -470px transparent;
}
<div id="nav-primary">
<span>Hello World</span>
</div>
Based on http://www.w3schools.com/css/css_background.asp
body
{
background-image:url('img_tree.png');
background-repeat:no-repeat;
background-position:right top;
}
If I understood correctly, the background-position is used to control the alignment of the background image. Now I need to control alignment and choose the right picture from a sprite. I don't know whether or not I can mix it together.
Thank you
No, there is no concept of padding/margin for background images.
Options:
1) Positioning the background (as already stated). The key is that the container would have to have fixed dimensions.
2) Nest a container inside a parent container. Parent gets the padding, child gets the background image.
Given that you are trying to do this with a sprite, both are likely options since a sprite has to have a fixed sized container anyways. For option 1, you'd need to make sure your sprite images have enough white space between each other in the file.
No, you can't mix them together.
You can place an image at an offset from the corner:
background-image: url('img_tree.png');
background-repeat: no-repeat;
background-position: 20px 20px;
But you can't combine this with the sprite techinque. This technique uses the fact that the element is smaller than the background image to clip the image, but you can't clip the background image 20 pixels into the element.
You can specify the exact position of the background to the pixel.
If you wanted a 10-pixel gap on the left-hand side, for example:
#nav-primary {
background:url("http://static02.linkedin.com/scds/common/u/img/sprite/sprite_global_v3.png") no-repeat scroll transparent;
background-position:10px 0px;
}
That being said, it looks like you already specified it to be set at (0, -470). Does that not work?
The background-position property allows for percentages and values, e.g. "20px 0", which I think is what you're looking for.