I'm not sure if I the title's correct, so feel free to edit it to something more descriptive.
How to, if there's a way to, read the width/height of an background-image image and pass it to width/height property of that element in CSS (without the use of JavaScript)?
So, since I think the question is still confusing, I'll best provide an example:
element {
background: url(image.png);
width: auto;
height: auto;
}
I know the above example doesn't work, but I was wondering if there is something similar to it that might.
Thanks!
P.S: I can do it in JS, so posting a JS solution won't be necessary.
There is no way to do this with only CSS.
I'm not sure what else there is to say.
It is impossible - workaraound is to put there img , set overflow to hidden, and put second div in with position relative ( it some setup to fit it all, but it works )
Related
Please find here a HTML snippet and the corresponding CSS which build a BorderLayout:
https://jsbin.com/zokutalafe/edit?html,css,output
-
The yellow area in that BorderLayout example shall have a height of 100%, unfortunatelly it has not :-(
The question is now: Is it possible to change that yellow container's height to 100% by just modifying the CSS, NOT(!) the HTML, without using new [Edit: I mean "additional"] CSS selectors (means: something like ".borderlayout-center > div { height: 100% }" is not allowed)???
This is for a very special use case - that's why I have the above mentioned strange constraints.
Thanks a lot in advance.
You can use like below:
.borderlayout-center div {
height: 100%;
}
I'm not shure what you mean with new CSS selectors
But something like
.borderlayout-center div{
height: 100%;
}
it's nothing new and it works...
Hi please check the photo below, what im doing is i want to have a background image below the slider with the fix size
Css Code
.swiper-slider-bg {
background: url('http://localhost/wordpress/wp-content/uploads/2017/11/bg-08-1.png');
background-size: auto 100%;
}
Current code
What I need to have
Define it in pixels instead of percentage. Or, as a much flexible alternate, you may also use pseudo to achieve the same.
:before or :after selector shall be useful for you. I am hoping that you know how to use these selectors so not explaining that stuff.
I think this is you need to want, refer below links for your use, It will be use your full page image slider.
https://www.w3schools.com/w3css/tryit.asp? filename=tryw3css_slideshow_self
https://codepen.io/jibbon/pen/BoisC
Having seen advice seemingly change over the years regarding use of empty DIVs (ie. <DIV CLASS="somediv"></DIV>) I'm confused as to the current thinking over whether or not to use when a DIV will have no inner HTML.
I can find no definitive confirmation over whether we can rely on all modern browsers to display background color and image correctly at the specified width & height when there is no inner HTML, so I'm thinking maybe we can't rely on it - yet it's such a seemingly basic area.
I have even seen suggestions that empty DIVs should never be used - but do specs really state it is 'wrong' to have empty DIVs, or is it just unreliable? (I've tried finding reference to them, but maybe I'm using the wrong terms).
To illustrate, here are 5 areas where I would normally use an empty DIV, in the absence of any recommended alternative:
as a placeholder for content which will subsequently be fetched by XHR calls
as a way to manually create space in a layout
where an image is defined in CSS (as a background image, but will effectively be foreground)
where the text will come from the CSS using .somediv:after{content:SOMETEXT}
where CSS is used to display graph bars etc using solid background color
Maybe there are different answers for each of these, which might explain the complexity over this issue.
I have, of course, tried discovering already, but for example the SO question Is necessary to show an empty <div>? suggests to me there is a huge amount of "IMHO", "probably", "seems to work" in this area. I would expect that by now that some official consensus has been reached on best practice.
So.. should I use and if so should I set font-size to the same as the smaller of DIV width/height to ensure that space is filled in all browsers? Are there any other CSS tricks to ensure this will work in all browsers?
The browser is not going to discard or forget your container just because it does not have any contents (yet).
If you want the container to have a specific placeholder shape, then you might give it min-height, min-width, height and width and make sure it's display: block;.
If you are still unsure, you can fill it with a spacer.gif/png without padding and margin.
http://jsfiddle.net/APxNF/1/
Short answer. Yes, browsers will render the div even if there is no content.
Long answer, That might now always be the case. I have worked in the web for 8 years now and never had to use these, but here they are anyway.
jsFiddle demo
HTML
<div class="empty1"></div>
<div class="empty2"></div>
<div class="empty3"></div>
CSS
.empty1 {
background: #FBB829;
height: 100px;
width: 100px;
}
.empty2:before {
content: "\00a0";
}
.empty2 {
background: #FF0066;
height: 100px;
width: 100px;
}
.empty3 {
background: #F02311;
min-height: 1px;
height: 100px;
width: 100px;
}
Sources:
Experience
Empty div with 2px width and background color doesnt show with height as 100%
http://csscreator.com/node/36023
I recently had an idea for using the CSS pseudo-class :hover to display a styled tooltip when the mouse is hovered over a link.
The basic code for the link looks like this:
.hasTooltip {
position:relative;
}
.hasTooltip span {
display:none;
}
.hasTooltip:hover span {
display:block;
background-color:black;
border-radius:5px;
color:white;
box-shadow:1px 1px 3px gray;
position:absolute;
padding:5px;
top:1.3em;
left:0px;
max-width:200px; /* I don't want the width to be too large... */
}
This link has a tooltip!<span>This is the tooltip text!</span>
The result is exactly what I want, but with one annoying problem: the span does not expand to accommodate text, and if I don't specify a width, the text is squashed.
I did some searching on Google, found a couple examples of work people had done (this example is creepily similar to what I've gotten), but no one seems to have addressed the span width problem I'm having.
I know this answer is extremely late, but it appears the key to your issue would be to use:
white-space: nowrap;
inside of your span, and get rid of any sort of width definition. Of course the drawback to this will be that the tooltip will only be able to support a single line. If you want a multiline solution you will most likely have to use javascript.
Here is an example of of this method:
http://jsbin.com/oxamez/1/edit
An added bonus is that this works all the way down to IE7. If you do not need to support IE7, I would suggest folding the span, and img styles into a :before, and :after for the .tooltip. Then you can populate the text using the data-* attribute.
I don't think there's a perfect solution to this problem with pure CSS. The first problem is that when you place the span inside the a tag the span only wants to expand as far as the width of the link. If you place the span after the the a it's possible to get close to what you're trying to do but you'll have to set the margin-top: 1.3em and then have to set a negative margin to slide the tooltip left. However, it's going to be a fixed setting so it won't sit exactly at the start of each link.
I whipped up a jQuery solution that sets left dynamically (and a nice little fade effect for good measure).
Demo: http://jsfiddle.net/wdm954/9jaZL/7/
$('.hasTooltip').hover(function() {
var offset = $(this).offset();
$(this).next('span').fadeIn(200).addClass('showTooltip');
$(this).next('span').css('left', offset.left + 'px');
}, function() {
$(this).next('span').fadeOut(200);
});
These tool tips can also be integrated into a word press theme easily. Just copy the CSS into your style. Css file and when creating your posts, just take help of the HTML code and create your own tool tips. Rest is all styling, which can be altered according to your own choice. You may also use images inside the tool tip boxes.
http://www.handycss.com/how/how-to-create-a-pure-css-tooltip/
Even though this question is a bit older already, I would suggest the following compromise:
Just use max-width: 200px; and min-width: 300%; or so,
whereas the min-width could result higher than the max-width.
Just figure it out.
This way you could not have entirely liquid tooltips but the width would stand in kind of a correlation with the width of the containing link element.
In terms of optical pleasantness this approach could be of value.
edit:
Well I must admit it is nonsense what I wrote. When the min-width can be higher than the max-width, there is no sense to it.
So just putting the min-width in percent would achieve what I tried to suggest.
Sorry for that.
I found this and it was working for me. It's a good solution when you have a lot of elements and jquery plugins on the same page and you can't work with
Text <span>Tooltip</span>
View pure CSS solution: JS BIN
Credit to trezy.com
for some odd reason the text area I have in my site won't accept the width I tell it to, I've tried to select it three times in the CSS just to make sure!
Here is a jsfiddle example that shows what I want, and here is the page where it doesn't want to work. I have searched through the CSS to find any conflicting textarea properties, but there are none.
Thanks for the help!
Edit: If you have Firebug, don't forget about it, and use it!
In one of your CSS files, you specified textarea { min-width: 40em; }.
You have min-width: 40em for all textarea elements.