Position element in middle of screen using CSS - html

After my website was completed, everyday I am trying to modify things that would make it more responsive. It's made in Muse so don't expect much of "responsiveness".
I have an element with this class:
#labelstrong
{
z-index: 17;
width: 633px;
background-color: transparent;
color: #FFFFFF;
text-align: justify;
position: fixed;
top: 1542px;
left: 164px;
}
Normally, the element is in the middle of the screen. But when I zoom out, the element maintains the same distance to the top of the screen (because of the top attribute of course). How can I define its position in a way that even if I zoom in or out it will still be in the middle of the screen.
UPDATE:
The problem is (and I forgot to mention it) that the position must be fixed as there is an horizontal scrolling feature for all elements ( they come from the right of the screen) and so they have to be on a fixed position.
UPDATE 2: Here is a live example. Imagine that the class is applied on each TAG (not the menu of course).
http://2323029s8s8s8.businesscatalyst.com/index.html


You can add for those big tags the following css:
.fixed-big-tag{
top: 50%;
transform: translateY(-50%);
}
Also as a counter measure, make sure the <body> and the <html> have 100% heights
Another idea would be to use the !important rule for the top property to overwrite what Muse outputs.(or any rule that needs to be overwritten)
If it works, you could probably add a new class on all these tags that need to be centered and overwrite it via css
Check it out, and let me know how it goes.


See this resource for techniques to centering elements using CSS: Centering in CSS: A Complete Guide
If you create a relatively-positioned parent container element, you can center your child element easily:
.parent {
position: relative;
}
#labelstrong {
z-index: 17;
background-color: transparent;
color: #FFFFFF;
text-align: justify;
position: absolute;
width: 634px;
height: 40px;
top: 50%;
left: 50%;
margin: -20px 0 0 -317px;
}
Note that the margin offsets are half of the width and height.


Try using percentages instead of pixels, like:
top: 10%;
If you want to horizontally center, try setting the margin to auto:
margin: 0 auto;
Your code would look like this:
#labelstrong {
z-index: 17;
width: 633px;
background-color: transparent;
color: #FFFFFF;
text-align: justify;
position: relative;
top: 10%;
margin: 0 auto;
}
Take a look at this example: http://jsfiddle.net/5a6fyb21/


jQuery would be your best bet.
I would just set your class to a fixed position then try using the following.
$(window).resize(function() {
var middle = $(window).height();
$('.middle').css('top', hello / 2);
});
The resize function is used so that it will remain in position if the window is resized.


Centered label over horisontally scrollable content:
http://jsfiddle.net/cqztf9kc/
.fixed {
margin: 50%;
position: fixed;
z-index: 1;
}
.content {
x-overflow: scroll;
height: 100%;
}

Related

stretch div over whole page in html/css

I have a link and i want that it is always at the bottom of the page. I tryed display: flex and align-items: flex-end but the problem is the div isn't going till the bottom of the page. I could just do margin-top: 375px but I want that it is at the bottom at a phone and a computer can someone help?
sorry for my bad english

This is what you're looking for:
Like others said, bottom: 0 and position: fixed is what you need.
width: 100% will stretch the div across the page.
When you add fixed to an element, it then becomes independent of all other elements, which makes it tricky to position. I added left: 50%; and transform: translate (-50%, 0); it helps center the element to the page.
Source: (Center aligning a fixed position div)
div.bottom-nav {
background-color: #232323;
width: 100%;
height: 55px;
line-height: 55px;
text-align: center;
position: fixed;
bottom: 0;
left: 50%;
transform: translate(-50%, 0);
}
a {
color: white;
}
<div class="bottom-nav"><a href=#>Click me</a>
</div>

I would try adding this to the element you want to stick to the bottom.
position: fixed;
bottom: 0;

Centering div to screen

I can't seem to get the black box to the center of the screen as opposed to the center of the div its inside in.
EDIT: For clarification, I only want the black box in the center of the results panel not the pink box with it. Also I would also like to keep my javascript intact.
EDIT 2: I'm trying to have something like an overlay that popsup in the middle of the screen when a user clicks on the image. Not sure if this is the best way or the best code to achieve that!
Would appreciate if anyone can help.
Here's my attempt: http://jsfiddle.net/BPLcv/1/
HTML
<div class="tooltip">
<div class="description">Here is the big fat description box</div>
</div>
<div class="tooltip">
<div class="description">Poop</div>
</div>
CSS
.tooltip {
position: relative;
border: 1px #333 solid;
width: 200px;
height: 200px;
background-image: url('https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcSkI2PXYOOOHltHwgIz6xwfuN079IAJDLsmOV68rQNNLCE-GFZ1_aQN89U');
}
.overlay {
position: absolute;
display: none;
background-color: rgba(0, 0, 0, 0.7);
top: 0;
left: 0;
bottom: 0;
right: 0;
}
.description {
position: absolute;
width: 300px;
height: 300px;
display: none;
background-color: black;
text-align: center;
z-index: 1;
/* centering???? */
top: 50%;
left: 50%;
margin-left: -150px;
margin-top: -75px;
}
Thank you!

If you want the description/overlay in the middle of the screen, your best bet is to use an element outside of your tooltip-elements, as these are fixed width.
If you have a top-element with width: 100%, your centering css wil work for any immidiate children.
Working fiddle: http://jsfiddle.net/BPLcv/4/
Here the overlay is filled with whatever is in the description element of the tooltip you're hovering:
overlay.html($(this).find(".description").html());
The description class is always hidden.

Check this Demo jsFiddle
CSS
body{
margin:auto;
width:50%;
}

Try this. Assign the div of interest id = CenterDiv, then add this css:
z-index:10;//remove left:50%
Now try adding this function via onload or onclick, etc:
function centerDiv() {
document.getElementById("CenterDiv").style.marginLeft = ((screen.availWidth - 300)
/ 2) + 'px';
}
The number 300 can be any number that represents the width of your element of interest.
Substituting the width of your element (here, 300px), this function will center an element with absolute position.

Sub Div's position relative to a parent Div

I'd like to have a site that will almost be responsive to a certain degree.
I've made a quick mock up of how I'd want it to look (This is really basic and missing page content but you should get the general idea;
Large: http://i.stack.imgur.com/vX11k.png
I'm sure you've seen sites like this before, but I can't get the coding to work.
I just need the inner div's to position to the parent div and not the page itself.
So far I just can't seem to get it to work.
Main Div:
#site {
width: 1000px;
margin: 0 auto;
position: relative;
}
Email button
.email {
background-image: url(img/topmenu_email.png);
position: absolute;
right: 10px;
top: 0px;
z-index: 83;
}
Here's how it was looking (locking to the side and when I resized browser everything would be overlapping);
http://i.stack.imgur.com/R1cAY.png

From what I can see, there's nothing wrong with your css.
It does behave how it should be.
If your problem is that the email etc not going all the way to the right part of the screen, it's probably because of this
#site {
width: 1000px; //It's saying that the site only have 1000px of width, and not the screen size
margin: 0 auto;
position: relative;
}
.email {
background-image: url(img/topmenu_email.png);
position: absolute;
right: 10px;
top: 0px;
z-index: 83;
}
Keep in mind that an absolute element will go as far as it's relative parent's size, in this case it's width.
Probable solution would be to set
#site {
width: 100%; //Make it full width
margin: 0 auto;
position: relative;
}

position fixed is not working

I have the following html...
<div class="header"></div>
<div class="main"></div>
<div class="footer"></div>
And following css...
.header{
position: fixed;
background-color: #f00;
height: 100px;
}
.main{
background-color: #ff0;
height: 700px;
}
.footer{
position: fixed;
bottom: 0;
background-color: #f0f;
height: 120px;}
But why the header and footer is not fixed, anything I did wrong? I want only "main" to be scrollable and "header" and "footer" to be at a fixed position. How to do?
+-------------------------------------+
| header | -> at fixed position (top of window)
+-------------------------------------+
| main |
| |
| | -> scrollable as its contents
| | scroll bar is window scroll bar not of main
| |
| |
+-------------------------------------+
| footer | -> at fixed position (bottom of window)
+-------------------------------------+
See this fiddle

My issue was that a parent element had transform: scale(1); this apparently makes it impossible for any element to be fixed inside it. By removing that everything works normally...
It seems to be like this in all browsers I tested (Chrome, Safari) so don't know if it comes from some strange web standard.
(It's a popup that goes from scale(0) to scale(1))

if a parent container contains transform this could happen. try commenting them
-webkit-transform: translate3d(0,0,0);
transform: translate3d(0,0,0);

you need to give width explicitly to header and footer
width: 100%;
Working fiddle
If you want the middle section not to be hidden then give position: absolute;width: 100%; and set top and bottom properties (related to header and footer heights) to it and give parent element position: relative. (ofcourse, remove height: 700px;.) and to make it scrollable, give overflow: auto.

Double-check that you haven't enabled backface-visibility on any of the containing elements, as that will wreck position: fixed. For me, I was using a CSS3 animation library...

Working jsFiddle Demo
When you are working with fixed or absolute values,
it's good idea to set top or bottom and left or right (or combination of them) properties.
Also don't set the height of main element (let browser set the height of it with setting top and bottom properties).
.header{
position: fixed;
background-color: #f00;
height: 100px;
top: 0;
left: 0;
right: 0;
}
.main{
background-color: #ff0;
position: fixed;
bottom: 120px;
left: 0;
right: 0;
top: 100px;
overflow: auto;
}
.footer{
position: fixed;
bottom: 0;
background-color: #f0f;
height: 120px;
bottom: 0;
left: 0;
right: 0;
}

I had a similar problem caused by the addition of a CSS value for perspective in the body CSS
body { perspective: 1200px; }
Killed
#mainNav { position: fixed; }

As others pointed out, certain CSS properties on a parent element will prevent position: fixed from working. In my case it was backdrop-filter.

This might be an old topic but in my case it was the layout value of css contain property of the parent element that was causing the issue. I am using a framework for hybrid mobile that use this contain property in most of their component.
For example:
.parentEl {
contain: size style layout;
}
.parentEl .childEl {
position: fixed;
top: 0;
left: 0;
}
Just remove the layout value of contain property and the fixed content should work!
.parentEl {
contain: size style;
}

Another cause could be a parent container that contains the CSS animation property. That's what it was for me.

For anyone having this issue primarily with navbars, not sticking to the top, I found that if any element in the parent container of the positon: fixed; element has a width exceeding 100% - so creating horizontal scrollbars - is the issue.
To solve it set the 'parent element' to have overflow-x: hidden;

You forgot to add the width of the two divs.
.header {
position: fixed;
top:0;
background-color: #f00;
height: 100px; width: 100%;
}
.footer {
position: fixed;
bottom: 0;
background-color: #f0f;
height: 120px; width:100%;
}
demo

You didn't add any width or content to the elements. Also you should set padding top and bottom to your main element so the content is not hidden behind the header/footer. You can remove the height as well and let the browser decide based on the content.
http://jsfiddle.net/BrmGr/12/
.header{
position: fixed;
background-color: #f00;
height: 100px;
width:100%;
}
.main{
background-color: #ff0;
padding-top: 100px;
padding-bottom: 120px;
}
.footer{
position: fixed;
bottom: 0;
background-color: #f0f;
height: 120px;
width:100%;}

You have no width set and there is not content in the divs is one issue. The other is that the way html works... when all three of fixed, is that the hierarchy goes from bottom to top... so the content is on top of the header since they are both fixed... so in this case you need to declare a z-index on the header... but I wouldn't do that... leave that one relative so it can scroll normally.
Go mobile first on this... FIDDLE HERE
HTML
<header class="global-header">HEADER</header>
<section class="main-content">CONTENT</section>
<footer class="global-footer">FOOTER</footer>
CSS
html, body {
padding: 0; margin: 0;
height: 100%;
}
.global-header {
width: 100%;
float: left;
min-height: 5em;
background-color: red;
}
.main-content {
width: 100%;
float: left;
height: 50em;
background-color: yellow;
}
.global-footer {
width: 100%;
float: left;
min-height: 5em;
background-color: lightblue;
}
#media (min-width: 30em) {
.global-header {
position: fixed;
top: 0;
left: 0;
}
.main-content {
height: 100%;
margin-top: 5em; /* to offset header */
}
.global-footer {
position: fixed;
bottom: 0;
left: 0;
}
} /* ================== */

I had the same issue, my parent was set to transform-style: preserve-3d; removing it did the trick for me.

We'll never convince people to leave IE6 if we keep striving to deliver quality websites to those users.
Only IE7+ understood "position: fixed".
https://developer.mozilla.org/en-US/docs/Web/CSS/position
So you're out of luck for IE6. To get the footer semi-sticky try this:
.main {
min-height: 100%;
margin-bottom: -60px;
}
.footer {
height: 60px;
}
You could also use an iFrame maybe.
This will keep the footer from 'lifting off' from the bottom of the page. If you have more than one page of content then it will push down out of site.
On a philosophical note, I'd rather point IE6 users to http://browsehappy.com/ and spend the time I save hacking for IE6 on something else.

You can use it in the same way because if the parent container has the transform effect, you could create a child where it occupies 100% of the parent container and add a position realtive and then the container that you want to add the position fixed and it works without problems.

might be an answer for some cases https://stackoverflow.com/a/75284271/7874122
TLDR position: fixed is attached to containing element, by which element is positioned. if containing block is different than viewport dimensions, fixed element will be placed according to containing block.

HTML background/layout

I'm just getting into HTML and CSS and I have a quick question. Is there any way to make a parent element grow in size to accommodate one of its children? I have the background set on <html>. Then inside the body I have a div which sets a different background color and isn't as wide/tall as the whole page. This leaves a two toned design. Then, I have a nested div containing all the content to be displayed. This all works fine, unless the page content is enough that a scroll bar is necessary. If that happens, both background colors are lost past the original bottom of the screen. This problem is extremely annoying and from what I've read there is no great way to handle it, but I wanted to see if anyone knew. I have the following properties set:
html {
background: [gradient code...]
height: auto;
min-height: 100%;
background-repeat: no-repeat;
background-size: 100%;
}
body {
height: auto;
width: 100%;
position: absolute;
bottom: 0;
top: 0;
margin: 0;
padding: 0;
border: 0;
}
div.background {
background-color: #D0D0D0;
text-align: center;
height: auto;
width: 70%;
position: absolute;
top: 150px;
bottom: 30px;
left: 15%;
margin: 0;
padding: 0;
border-radius: 7px;
}
div.container {
height: auto;
width: 70%;
position: absolute;
left: 15%;
bottom: 0;
top: 0;
}
Where div.background has the second background color and div.container has the content displayed on the page.
Thanks for your help.

How about not using position: absolute? Remove that (and the associated top, left, bottom...) and replace them with correct margins instead.

I believe if you specify size (width, height) auto on the parent (or just leave it without specifying size) it grows/shrinks to fit the children's size (it doesn't work recursively, so you may want to go up to the last parent in the tree). Avoiding absolute positioning (http://www.w3schools.com/Css/css_positioning.asp) could also do the trick, and float element or a different z-index could probably do the workaround too, but overgrowing the parent, I think...

If you get rid of the width and position absolute div.background and change position absolute to relative for div.container you should be good