In a web application I maintain, I customized an input button (of type file) by making it transparent and positioning it over an img. Doing it this way has vast browser compatibility compared to some more sophisticated ways involving label and such.
I also wrote simple JS to display the name of the selected file.
Now here's a situation: some users access this app through a forward proxy that strips out JS. In other words, those users don't have access to any JS capabilities.
The problem:
My problem is that for such users, the customized input button is unable to display the filename at all. This causes some of them to think the button is broken.
One solution is to detect all these forward proxy users and serve them a different page (one where the input button is unstyled). This task has server-side complications outside the scope of this question.
Hence I'm looking for a pure CSS/HTML solution first. I know I can't use CSS/HTML to show the filename. That's fine.
But is it possible to show any visual change in the customized button once the user has pressed it (e.g. change in opacity, width or even positioning a new div over it)? I'm looking for cross browser compatibility in this solution - especially mobile web browsers including Chrome, Android and Opera. Illustrative examples would be great. Also see below to find out what I tried and almost got to work.
Here's the code I've written to customize the button:
<style>
.outer{
position:relative;
overflow:hidden;
height:60px;
max-width:132px
}
img{
position:absolute;
z-index:3;
}
input[type=file]{
position:absolute;
z-index:4;
opacity:0;
max-width:132px;
height:60px
}
</style>
<div class="outer">
<img src="cam.svg" width="60" height="60">
<input type="file">
</div>
Here's one thing I tried that actually works (but isn't cross browser):
<style>
#input:target + span:after{
content:"File Selected";
position: absolute;
z-index:5;
}
.outer{
position:relative;
overflow:hidden;
height:60px;
max-width:132px
}
img{
position:absolute;
z-index:3;
}
input[type=file]{
position:absolute;
z-index:4;
opacity:0;
max-width:132px;
height:60px
}
</style>
<div class="outer">
<img src="cam.svg" width="60" height="60">
<input id="input" type="file"><span></span>
</div>
Ergo, I called file input via <a href="#input">, and then styled the empty span occurring right after the target. This patterns breaks down in some older browsers I must entertain. Maybe I should have used a basic label?
Any innovative solutions that solve my problem are most welcome. I'm okay with hacky stuff, as long as it's cross-browser compatible.
I can't figure out how to make a div move when another div is clicked.
Here is a jsfiddle demo: https://jsfiddle.net/vufosn18/ (make sure you make it fullscreen so the image doesn't overlap with the text)
I have been googling around for a bit and can't find anything, so I tried:
#feas:focus #construct{
margin-top: 300px;
position: absolute;
}
When I click on feasibility it gives construction management a margin-top of 300px.
Any help is appreciated, if your answer could be in JavaScript/CSS that would be great.
It would be hard to fix all your issues in one answer. But I'll try to get you going:
Everything is absolute, I think this is not recommended for your case. Read more
You are using ID's everywhere, causing lots of duplicate styles. Try changing this to classes. This will be much easier to manage small changes.
I recommend checking that you are working html strict, this may prevent having rare situations in different browsers. (FYI)
To answer your question:
There are a lot of plugins out there that are easy to use. I suggest you to use one of them instead:
https://jqueryui.com/accordion/
A step by step example (just googled it)
..
For what you want to show in each tab you can have independent html/css. By default is img and p relative. So they won't overlap then.
here is a simple animation
Click on hello and the div with the word world will move down
function click(){
document.getElementById('bottom').style.top="50px"
}
document.getElementById('top').addEventListener('click',click,false)
#top{
width: 50px;
height:50px;
border:solid;
}
#bottom{
position:relative;
top:0px;
width: 50px;
height:50px;
border:solid;
transition-property:top;
transition-duration:3s;
}
<div id="top">
hello
</div>
<div id="bottom">
world
</div>
I created this code that displays the paragraphs in second line ... is there a better way to do this?
JSFiddle
HTML CODE:
<p id="first">Primul paragraf</p>
<p id="second">Al dolea paragraf</p>
Code css:
#first
{
width:130px;
background:red;
display:inline;
float:left;
}
#second
{
width:150px;
background:blue;
float:right;
display:inline;
}
Thanks in advance!
If you're looking for two distinct pieces of content to live next to each other, check out a simple grid layout.
If you're trying to mush two distinct pieces of content into one line, then you're using non-semantic HTML, and you should switch to using a different heirarchy of tags to accomplish your content-smushing.
I believe I understand you correctly that you're looking for - essentially - a two column layout. I strongly recommend the css-tricks "Don't Overthink It Grids" layout, and I'm using a slightly (slightly) more complicated grid layout in production sites.
I want to have an image which is uploaded from my database and on top of it the exact same size in the same position is a HTML5 canvas.
Most of the solutions I have found I have been using JQuery/JavaScript, however I want a similar solution if possible just using CSS3 as the images are being outputted from a database and there can be more than one image on the page and each image will have a canvas.
How can I achieve this?
Yes.
You can do this entirely in CSS, but you will have to add some specific HTML plumbing for each image.
If you ever get tired of the extra plumbing, javascript could do most of the plumbing for you.
Here is a Fiddle of the CSS-only version:
http://jsfiddle.net/m1erickson/g3sTL/
The HTML:
<div class="outsideWrapper">
<div class="insideWrapper">
<img src="house-icon.jpg" class="coveredImage">
<canvas class="coveringCanvas"></canvas>
</div>
</div>
Of course, in your version, you would replace the image src with your dynamic database call to fetch the image.
The CSS:
.outsideWrapper{
width:256px; height:256px;
margin:20px 60px;
border:1px solid blue;}
.insideWrapper{
width:100%; height:100%;
position:relative;}
.coveredImage{
width:100%; height:100%;
position:absolute; top:0px; left:0px;
}
.coveringCanvas{
width:100%; height:100%;
position:absolute; top:0px; left:0px;
background-color: rgba(255,0,0,.1);
}
Possible duplicate.
Depending on how many images are in the database, you could have a separate canvas id for each with the name of the image file (e.g. canvas #foo { background:url(foo.jpg) }). I would load this in a separate stylesheet. :)
It would probably be easier to maintain a Javascript solution though if your database is dynamic. A few lines of javascript would be sufficient, instead of constantly updating a stylesheet with new names. Less error typo prone as well.
If I have two layers on a page, split horrizontally, with the second layer overlapping part of the first layer, is it possible to make it "click through"?
I have links in the first layer, which the second layer overlaps, which stops the links from being clickable. Is there a way to make the layer display, but be click through, while still having it's own links clickable?
edit:
Here is an example, with html and a stylesheet.
The test links become unclickable when inline with the header in Layer3, but below that they are fine. Is there a way to rectify this?
<title>Test</title>
<link rel="stylesheet" href="test.css" type="text/css">
<body>
<div id="Layer0">
<div id="Layer1" class="Layer1">
<h3 align="left">Brands</h3>
</div>
<div id="Layer2" class="Layer2"><h1>TEST</h1>
<div id="rightlayer">
TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>
</div>
</div>
<div id="Layer3" class="Layer3"><h1>Ed Hardy Auctions</h1>
</div>
</div>
</body>
</html>
And the css
#Layer0 {
width:100%;
height:100%;
}
body {
margin:10px 10px 0px 10px;
padding:0px;
color:#999999;
font-family:"Trebuchet MS",arial,sans-serif;
font-size:70.5%;
}
#Layer1 {
position:absolute;
left:10px;
width:200px;
margin-top:17px;
font-size:1.0em;
padding-left:12px;
padding-top:8px;
}
#Layer2 {
background:#fff;
margin-left:199px;
color:#000;
}
#rightlayer {
float:right;
}
.Layer3 {
position:absolute;
top:67%;
padding:20px;
width: 100%;
}
Thought I would update this as I'd been struggling with this for a few hours and think i've found a solution. Looked into using Jquery but the CSS property:
pointer-events:none;
...did exactly what I wanted.
It is not possible if you want the divs to stay in their current x,y, (and most importantly) z - only the "top" layer is clickable.
Addendum post OP edit:
Think of CSS layout as if you were physically working with bits of paper (this is much easier to visualise if you give all your "layer" divs a different background colour). The rendering engine cuts out a bit of paper in the dimensions you give it (or it works out) for each element it finds. It does this in the order it encounters them putting each bit of paper on the page as it goes - the last item is going to be on top.
Now you've told the rendering engine to put your 3rd div in a position where it overlaps the 2nd. And now you expect to be able to "see" the covered content. Wouldn't work with paper, won't work with HTML. Just because it's transparent doesn't mean it's not taking up space.
So you have to change something.
Looking at your CSS and markup (which honestly could be cleaned up, but I'll assume there's other mark-up you're not showing us which justifies it) there's a couple of easy win ways:
1). Set a z-index of -1 on Layer3 - z-index is how you can change the layering order from the default (as encountered). This just moves the entirety of Layer3 below the rest of the page so what was hidden becomes exposed, but also vice versa depending on content.
2). Change the width from 100% to e.g. 80%, or more likely given your use of pos:abs set left:0px and right:199px; (I'm guessing that padding-left on Layer2 is an intended column width?). The cost of this is that your Layer3 is no longer 100% width
3). Google "CSS column layout" and find a pattern that reflects what you need and adapt that. Every CSS layout which can be done has been done a million times already. Standard techniques exist which solve your problems. CSS is hard if you haven't built up the experience, so leverage the experience of others. Don't reinvent wheels.
It would be a mammoth job, but it is possible.
You would need to capture the click event on the top layer/div, and find the cursor x-y position.
Then find all links in the layer/div underneath the top layer, and see if it's position on the screen falls around the current mouse position.
You could then trigger the click of the matched link.
I would use jQuery (if you are not already) for this and then re-post with a jQuery tag if you run into troubles.
It is hard to tell without seeing some code.
You could try setting z-index on the bottom layer but that works on elements that have been positioned with absolute, relative or fixed (position:absolute).
edit after seeing code:
Add position:relative; z-index:100; to #rightLayer.
Or you could remove the width:100% from .Layer3.
You may want to refactor your code and go with a two column layout for #rightLayer and .Layer3.
css
#Layer0 {
width:100%;
height:100%;
}
body {
margin:10px 10px 0px 10px;
padding:0px;
color:#999999;
font-family:"Trebuchet MS",arial,sans-serif;
font-size:70.5%;
}
#Layer1 {
width:200px;
margin-top:17px;
font-size:1.0em;
padding-left:12px;
padding-top:8px;
}
#Layer2 {
background:#fff;
margin-left:199px;
color:#000;
}
#rightlayer {
float:right;
}
.Layer3 {
}
html
<div id="Layer0">
<div id="Layer2" class="Layer2">
<h1>TEST</h1>
</div>
<div id="Layer1" class="Layer1">
<h3 align="left">Brands</h3>
</div>
<div class="content">
<div id="rightlayer">
TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>TEST><p>
</div>
<div id="Layer3" class="Layer3">
<h1>Ed Hardy Auctions</h1>
</div>
</div>
</div>
I'm assuming from the example that the links in the rightlayer are the only links that need to be clicked, and that you don't have links in the other layers. If so, you could solve the problem by changing the z-index order of the divs.
Layer1 and Layer3 have position absolute, so if you add a position style (absolute or relative) to Layer2, you will be able to pull that div to the front, also pulling the rightlayer div to be in a higher layer than Layer3.
I added the following to the CSS:
#Layer2 {
position: relative;
z-index: 1;
}
From what I can see that leaves the current page setup just the way it is, but pulls all the elements (including the rightlayer with the links) to the front, so you'd be able to click all the links in it.
For debugging purposes I suggest adding background colors to all the different layers to get an idea of the z-index order of the different layers. With the background color in place it was quite easy to spot the layer that was falling over the links, but also to verify that the new z-index order makes the links available.
Hope this helps!
I submitted a bug years ago to the Firefox Bugzilla saying that there was this very bug in Firefox.
I was told by a Mozilla engineer that this was not actually a bug and that it is the correct behaviour as per the HTML/CSS specifications.
Unfortunately I can't find the original bug to reference as it was about 6 years ago.
The reason I submitted the bug was because I could click through the top div onto the links below when using IE (6 I think) but Firefox would not let me.
As usual, it turned out hat IE had the incorrect implementation and Firefox was working as intended by the spec.
Just because a div is transparent does not mean you should be able to click through it.
I'm not sure how you could get around this with JavaScript or CSS. I would take a step back and have a re-think about what you're trying to achieve and how you're trying to achieve it.
Greg
Can you not simply set the width of the div to auto (the default for absolute positioning - i.e. just delete the width:100% from .Layer3).
That way the div will only be as wide as is necessary, rather than unnecessarily overlapping the links.