I have a timer bar showing the remaining time of a contest. As the user answers more questions of the event, scrolling down, I want the timer to be fixed in its position. I know this can be achieved by setting the CSS position to fixed.
But fixed needs either a width set for the element, or left and right values. My problem is that the layout of the page is boxed, with margins at the left and right of the "box", and it depends on the user's viewport, how much width there is for the box in the middle...
How can I calculate the width once the page loads and then set that width to the timer bar in order for fixed property to get the data it needs?
I tried setting it to 100%, but for position: fixed 100% means 100% of the viewport, not of the parent element, so the bar grows from the right, outside of the viewport (if you can get what I mean), since there are margins on the left and right of the boxed layout...
Use position: sticky;
.wrapper {
text-align: center;
max-width: 768px;
}
.progress {
position: sticky;
background: red;
top: 0;
}
/* tall content to cause scrollbars */
main > div {
height: 100vw;
}
<h1>Title above stickied progress</h1>
<div class="wrapper">
<div class="progress">
<progress></progress>
</div>
<main>
<div>Example of a very long step</div>
<div>Example of a very long step</div>
</main>
</div>
You can use the 'vw' CSS unit to get a percentage of viewport width. For example width: 50vw; would set it to 50% of the current viewport width.
You can also use calc() to do calculations. For example, if I know I want something to be a third of the current viewport width I could set width: calc(100vw/3);
Related
There are 2 fixed(can't be change) inline blocks and min-widths for both of them. When i'm trying to resize the window (width less then min) they overlap each other. Any suggestion ? How can I set min-width for whole page?
<div style="position:fixed;left:0;top:0;bottom:0;width:40%;min-width:500px;border:2px solid red;margin:5px;"> </div>
<div style="position:fixed;right:0;top:0;bottom:0;width:40%;min-width:500px;border:2px solid blue;margin:5px;"> </div>
The short answer is no, not without changing that position: fixed
have a look at what position: fixed actually means:
fixed
Do not leave space for the element. Instead, position it at a
specified position relative to the screen's viewport and don't move it
when scrolled. When printing, position it at that fixed position on
every page.
https://developer.mozilla.org/en-US/docs/Web/CSS/position
And since you can't control the width of the viewport...
Position absolute should work though, and then you can set your body to something like this:
body {
min-width: 1020px;
position: relative;
min-height: 100%;
}
html{
height: 100%;
}
http://jsfiddle.net/1forkath/
Edit: For the sake of simplicity, I reduced my problem with overlay (see Background below) to width of a div. By doing that I however created a different and somewhat artificial problem. The accepted answer solves my real problem. The "reduced" problem is not solved there.
How can I make div with width equal to 100% of the page width? (without setting fixed min-width)
Seemingly, the solution is trivial. <div> with its 100% width should be OK by itself. That works fine unless you shrink the browser window below the page width (that's when scroll bars appear). Then the width of the <div> element is equal to the window size, not to the page size.
A note on the demonstration code: The first div simulates the page width. The divs below are my attempts to achieve an element wide across all page. If the page is big enough (more than 500px), they are rendered as expected - all over the page. But if you shrink the window (below 500px) and scroll bar appears, then the divs also shrink, although I want them to stay at 500px.
Here's the code, or check it out on jsFiddle if you prefer
/* just to see sizes of the elements */
div {
border: 1px solid red;
}
/* this simulates the width of the actual page content */
div#fixed {
width: 500px;
}
div#full1 {
width: 100%;
}
div#full2 {
width: 100%;
min-width: 100%;
}
div#full3 {
position: relative;
display: inline-block;
width: 100%;
}
/* this works fine, but uses fixed size min-width, I cannot use */
div#fullOK {
width: 100%;
min-width: 500px;
}
<div id="fixed">Width fixed to 500px</div>
The DIVs below are attempts to achieving 100% width despite scrolling. All work only if the window is wider than 500px.
<div>default</div>
<div id="full1">just width 100%</div>
<div id="full2">width and min-width 100%</div>
<div id="full3">run out of ideas</div>
<br>
<br>
<div id="fullOK">fixed min-width is the only thing that works (unusable for me though)</div>
Background: I have a page, which has an editor area that can be resized by the user. It has a modal dialog windows support, which - when invoked - shows a window and covers the rest of the page by a semi-opaque background with height and width set to 100%. It works well, unless it is viewed in window smaller than the page. Then scrolling shows part of the page not covered by the background, which looks ugly. I need to have this background spanning all over the page, not just over the visible area. Setting min-width and min-height could be done only with the help of JavaScript (due to unknown page size, as the user can resize the canvas) and I'd prefer avoiding that.
Use position: fixed for the overlay. The scrolling doesn't matter as elements that are fixed will position themselves in relation to the viewport. height: 100% and width: 100% will keep the overlay over the entire page no matter what you do.
From the MDN (emphasis mine):
fixed
Do not leave space for the element. Instead, position it at a specified position relative to the screen's viewport and don't move it when scrolled. [...]
CSS / HTML / Demo
* {
margin: 0;
padding: 0;
font-size: 1.5em;
}
body {
background: white;
}
.cover {
position: fixed;
height: 100%;
width: 100%;
background: rgba(255, 0, 0, 0.7);
}
<div class="cover"></div>
<h1>I am overlapped!</h1>
<input type="text" value="cant touch this" />
I have a div ( position :fixed ) with varying height depending on the content in it. To have an auto scroll for that i have added overflow-y:auto and assigned a fixed height.
Is there a way to auto set the height of the div so that when the browser space gets changed, the height of the div changes accordingly, and if there is not enough space the scroll bar appears and when there is enough available space the scroll bar disappears.
use position:absolute instead of position: fixed and use the top left, right and bottom co-ordinates and set the scroll to auto;
example HTML:
<div id="resize">
<p>content</p><p>content</p><p>content</p><p>content</p>
</div>
CSS:
#resize {
background: #f00;
color: white;
position: absolute;
top: 100px;
left: 200px;
right: 200px;
bottom: 100px;
overflow: auto;
}
p {line-height: 3; margin: 0;}
Working Example : Here
Use two DIVs, one nested inside of the other.
The outer DIV should be set to position:fixed;max-height:100%;overflow-y:auto
The inner DIV will contain your contents. So far as I can tell, it won't require any specific styles.
What should happen (and what's happening when I test this fix in my browser) is that the outer DIV should shrink-wrap to fit the inner DIV -- but it will not exceed the height of the window. If the inner DIV exceeds the height of the window, it will also exceed the height of the outer DIV, producing a scrollbar.
EDIT: Sample markup:
<div id="outer">
<div class="inner">
Content goes here.
</div>
</div>
And the CSS:
#outer{
position:fixed;
max-height:100%;
overflow-y:auto;
bottom:0; /* sample value */
left:0; /* sample value */
}
#outer div.inner{
/* Whatever style you want the positioned box
to have. Border, padding, background, etc. */
}
You can listen to the resize event on the window and update the width accordingly.
$(window).resize(function() {
});
http://api.jquery.com/resize/
Alternatively, depending on the layout of your page, you might be able to just use height: 100% (or another % that works for you).
I am trying to make a pinned down style menu like this:
http://www.w3.org/Style/Examples/007/menus
Except I want the horizontal positioning to be more flexible.
I know that I can do that having a percentage value in "right:" instead of a constant, but i want the menu to fit snugly in a centered blog layout as the sidebar, which means when the page is resized, the sidebar shouldn't cover the content. Similarly, the box shouldn't spread away from the content if i make the page bigger.
Any way to do this with only css? If not, perhaps an easy javascript solution?
Here's one way to do this with some generic code:
HTML:
<div id="container">
<div id="content"></div>
<div id="sidebar"></div>
</div>
CSS:
Set an explicit width on the container and the content, leaving room for the sidebar in the container. Horizontally center the container.
#container {
width: 200px;
margin: 0 auto;
}
#content {
width: 150px;
}
Now we're going to position: fix the sidebar relative to the center of the page instead of relative to the right edge of the page. Make it the width of the left over space in the container and give it a margin-left (or padding-left, depending on other things you may want to do with it) equal to the width of the content. Then set right: 50% (for a right sidebar, switch these values to left for left sidebar) and margin-right to negative one half the container width:
#sidebar {
width: 50px;
margin-left: 150px;
position: fixed;
right: 50%;
margin-right: -100px;
/* other styles such as "top", etc. */
}
Resize the window and it stays snug to the content and vertically positioned wherever you place it.
Here's a fiddle (with some extra styles for visual clarity): http://jsfiddle.net/blineberry/UkEkS/
I'm trying to get a jquery carousel centered on the screen, even when the clipping area is wider than the viewport. This will basically always give the element a negative left margin -- how can I specify this? The clipping area is a fixed width but of course the viewport area is variable.
Here's the best solution I've been able to find uses a wrapping element around your-fixed-width content, then a -50% margin on the content itself. This is off the top of my head, but it should be enough to get you started. Here's the code snippet:
div.wrapper {
position: absolute;
left: 50%;
}
.content {
position: relative;
margin-left: -50%;
}
<div class="wrapper">
<div class="content">JQUERY BIZ-NASS HERE</div>
</div>
Of course, this assumes that your div here is a direct descendant of the body tag, and that your browser specifies body to have a width of 100% and no margin or padding.