having a general css issue while creating a page with animations. I have a main container that's positioned relative and more than one container that's absolute positioned within that for the purpose of changing the background styles like color of the whole page and shifting it around to reveal the other containers of different colors under it via z-index.
why doesn't the background color show up?
.main {
position: relative;
}
.bg {
position: absolute;
width: 100%;
height: 100%;
}
.green {
background: green;
z-index: 5;
left: 50%;
}
.blue {
background: blue;
z-index: 4;
}
<div class="main">
<div class="bg green">green</div>
<div class="bg blue">blue</div>
</div>
When you position something as absolute, it is removed from the document flow. This means that now main has nothing to give it any height (since the default is auto), and so therefore the children's height: 100% is still 0. The text is still visible because the default of overflow-y is visible.
To fix it, give main some height.
body, html, .main { height: 100% }
.main {
position: relative;
}
.bg {
position: absolute;
width: 100%;
height: 100%;
}
.green {
background: green;
z-index: 5;
left: 50%;
}
.blue {
background: blue;
z-index: 4;
}
<div class="main">
<div class="bg green">green</div>
<div class="bg blue">blue</div>
</div>
Related
There are multiple questions named this way, but I didn't find one that applies to my case, so here I am:
In this snippet:
#container:hover {
overflow-x: hidden;
}
#container {
position: relative;
width: 400px;
height: 40px;
background: red;
margin: 2em;
}
#child {
position: absolute;
bottom: 0;
}
<div id="container">
<div id="child">
a<br/>
b<br/>
hover<br/>
me
</div>
</div>
You can see that overflow-x, which is applied when you hover the red box, will also hide the overflow-y (at least on Chrome). This is annoying because I have a tooltip that I would like to be able to overflow above the red box, and in the meantime I have a menu that will slide from the right side and that should stay hidden.
Is this a bug? Is there a workaround?
You can't change the way overflow-x and overflow-y behave (it's the same in Firefox and other browsers), but you can change the way your HTML is organized.
Put everything that you want to hide when overflowing in a single wrapper. Put your tooltip in another wrapper.
Something like this may suit your needs:
#container {
position: relative;
width: 400px;
background: #f77;
margin: 3em 2em;
}
#child {
overflow: hidden;
position: relative;
}
#menu {
position: absolute;
left: 100%;
top: 0;
background: #dd2;
transition: .2s;
}
#child:hover #menu {
transform: translateX(-100%);
}
#tooltip {
position: absolute;
bottom: 100%;
}
<div id="container">
<div id="child">
hover<br/>
me
<div id="menu">
menu
</div>
</div>
<div id="tooltip">
a<br/>
b
</div>
</div>
Is the clipping behavior a bug?
No, the clipping is in accordance with the spec.
UAs must clip the scrollable overflow area of scroll containers on the
block-start and inline-start sides of the box (thereby behaving as if
they had no scrollable overflow on that side).
In your case, the "block-start" side is the top, and the "inline-start" side is the left. That's why you can put your tooltip below the content, and it will trigger a scrollbar.
#container:hover {
overflow-x: hidden;
}
#container {
position: relative;
width: 400px;
height: 40px;
background: red;
margin: 2em;
}
#child {
position: absolute;
/* bottom: 0; */
top: 0;
}
<div id="container">
<div id="child">
hover<br/>
me<br/>
a<br/>
b
</div>
</div>
So why is it possible to scroll to content overflowing below the box, but not possible to simply make it visible? The reason is that when any overflow property is set to hidden, the entire box becomes a scroll container.
[A scroll container] allows the user to scroll clipped parts of its
scrollable overflow area into view.
You can use overflow: clip, which does not turn the box into a scroll container. If you clip in both direction, you can also adjust the distance at which clipping occurs as well using overflow-clip-margin :
#container:hover {
overflow-x: clip;
}
#container {
position: relative;
width: 200px;
height: 40px;
background: red;
margin: 2em;
}
#child {
position: absolute;
bottom: 0;
}
<div id="container">
<div id="child">
aazkopekzapoekzapoekzapoekzapoekpozakepozakepozakeoza<br/>
b<br/>
hover<br/>
me
</div>
</div>
I am using bootstrap, I wanted one div behind the other div, so used z-index en position: absolute and relative.
When doing this, every div under the div with z-index: 1 goes behind this div, while I want it to stay under it.
The div also becomes wider than the max-width when using 100%
<div class="row" id="MENUROW">
<div class="col-md-12" id="MENUCOLUMN"><h1>SHOP</h1></div>
</div>
<div class="row" id="MAINROW"> <!-- this has the background-image -->
<div class="col-md-12" id="MAINCOLUMN">
</div>
</div>
CSS:
#MENUROW
{
position: relative;
height: 80px;
background-color: transparent;
z-index: 2;
}
#MAINROW
{
position: absolute;
z-index: 1;
top: 60px; /*because there is 1 div above the menu div, this div needs to be just under that div, behind the menu div */
width: 100%;
background-image: url(../images/background.jpg);
background-size: cover;
}
when doing this the background image goes wider (to the right) than the width of the parent div.
https://jsfiddle.net/2cs60vrr/3/ example, just made the background red to show how wide it should be, the background image goes much wider
Point 1
You didn't used .container class in your HTML. Bootstrap has a structure to get it's maximum feature. You must need to use .container. Bootstrap structure is below:
<div class="container">
<div class="row">
<div class="col-*-*">
Your Content
</div>
</div>
</div>
Make your html as above to solve this issue.
Point 2
If you want not change your html, then use this code below to any .row to solve this issue.
margin-left:0;
margin-right:0;
I am sorry if we are unsure what you are looking for but is that what you want?
.grid {
margin: 0 auto;
max-width: 100%;
width: 100%;
background-color: #fff;
}
.row {
width: 100%;
margin-bottom: 0px;
display: flex;
}
#MENUROW {
position: absolute;
height: 80px;
background-color: red;
z-index: 2;
}
#MAINROW {
position: absolute;
z-index: 1;
top: 0;
width: 100%;
max-width: 1400px;
background-image: url(https://upload.wikimedia.org/wikipedia/commons/e/ed/Palais_Garnier.jpg);
background-size: cover;
}
https://jsfiddle.net/norcaljohnny/xt9c9d2r/2/
You should put the wrapper around the whole thing to position:relative;
And both rows to position:absolute;
That's it.
When using position:absolute; the block goes to the absolute top left corner of the closest parent html tag that has a position:relative;. If there is no parent with position:relative; your absolute positioned items go to the upper left corner of your screen.
(the first row is not a parent of the second, but they are siblings. The wrapper "grid" is the parent of the 2 rows)
<div class="grid">
<div class="row" id="MENUROW">
<div class="col-md-12" id="MENUCOLUMN">
<h1>SHOP</h1>
</div>
</div>
<div class="row" id="MAINROW">
<div class="col-md-12" id="MAINCOLUMN">
text
</div>
</div>
</div>
And CSS
.grid {
position: relative;
}
.row {
width: 100%;
}
#MENUROW {
position: absolute;
background-color: red;
z-index: 1;
}
#MAINROW {
position: absolute;
z-index: 2;
background-image: url(https://upload.wikimedia.org/wikipedia/commons/e/ed/Palais_Garnier.jpg);
background-size: cover;
}
Here is your updated example:
https://jsfiddle.net/2cs60vrr/6/
I'm trying to have an child element (something like a toolbar) of a parent element to be positiond on its bottom edge. The bahavior should be the same as using position fixed for the browser view.
I'm using absolute position right now. Everyting is perfect until the parent needs to scroll its content. Then the toolbar moves along with the rest of the parent's content.
Could somebody explain me why the toolbar moves?
Is it possible to achieve that task without need any javascript?
* {
box-sizing: border-box;
}
.container {
position: relative;
width: 100px;
height: 150px;
overflow-y: auto;
border: 1px solid black;
}
.mock {
height: 200px;
background-color: red;
}
.tool-bar {
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 40px;
background-color: blue;
}
<div class="container">
<div class="mock"></div>
<div class="tool-bar"></div>
</div>
The toolbar is inside the scrollable area, that's why it scrolled. Try this code:
HTML
<div class="container">
<div class="scroll">
<div class="mock"></div>
</div>
<div class="tool-bar"></div>
</div>
CSS
div.scroll { /* style of .container to scroll */ }
I have found an interesting fiddle that may help you. They are using position:fixed and the divs are not nested:
http://jsfiddle.net/b2jz1yvr/
<div class="fixedContainer">
This is experimental
</div>
<div class="otherContainer"></div>
.fixedContainer {
background-color:#ddd;
position: fixed;
padding: 2em;
left: 50%;
top: 0%;
transform: translateX(-50%);
}
.otherContainer {
height:1000px;
background-color:#bbb
}
I'm working with absolute positioning within a relative div. The code is as such: http://jsfiddle.net/32mq5v6L/1/
HTML
<div id="container">
<div id="featured-posts">
<div class="slide"><img src="http://alien.devprose.com/starwars/wp-content/uploads/2014/12/star-wars-droid.jpg" /></div>
<div class="slide"><img src="http://alien.devprose.com/starwars/wp-content/uploads/2014/12/han-solo-1140x350.jpg" /></div>
</div>
<div id="other-content">
Other Content
</div>
</div>
CSS
#container { width: 100%; margin: 0 auto; background: #eee; }
#featured-posts { position: relative; width: 100%; height: auto;}
.slide { width: 100%; height: 20px; position: absolute; top: 0; }
#other-content { }
My problem is the other-content div appears underneath #featured-posts unless I apply a set height to that container, which I can't do since the goal is to make all of this responsive.
Where am I going wrong?
If you plan to have #other-content after positioned container, you will have to create new stacking context in order to move it above. One way to do it since it's not positioned is to set very little opacity:
#other-content {
z-index: 10;
opacity: .99;
}
Demo: http://jsfiddle.net/32mq5v6L/1/
My code looks like this:
css:
.top {
position: absolute;
top:0;
left:0;
height: 1600px;
width: 100%;
z-index: -100;
}
.bar {
position: relative;
z-index: -200;
width: 100%
height: 100px;
}
.inner-bar {
position: relative;
z-index: 100;
width: 100%
height: 50px;
}
html:
<body>
<div class="top">some content</div>
<div class="bar">
<div class="inner-bar">some content</div>
<div>
</body>
As you can see I am trying to make inner-bar appear in front but this does not work. Once I set bar to be behind of everything ( which works) this also sets inner-bar to be behind of everything no mater what styling I do for inner-bar. My layout requires that inner-bar must be a child of bar. So is there a solution and what it is?
To make it clear my objective is to make bar behind top (content in top appears on bar) and to make top behind inner-bar ( content in top is hidden if it overlaps inner-bar so that the links in inner-bar are active).
first off there is an error in the html you posted:
<body>
<div class="top">some content</div>
<div class="bar">
<div class="inner-bar">some content</div>
</div>
</body>
you didn't close the last div :)
as for the rest:
here you go good sir! http://jsfiddle.net/8AJnD/31/
.top {
position: absolute;
top:0;
left:0;
height: 1600px;
width: 100%;
top:0;left:0;z-index:0;
}
.bar {
position: absolute;z-index:-1;
width: 100%;
height: 100px;top:0;left:0
}
.inner-bar {
position: absolute;
z-index:-2;
width: 100%
height: 50px;top:0;left:0
}
Use absolute instead of relative and make the parent relative to be able to position the elements however you want them to be positioned
Negative z-index values have strange behavior. I don't believe that they work in "layers" like you would expect, rather they all wind up on the same "layer". Try using positive z-index values instead:
.top {
position: absolute;
top:0;
left:0;
height: 1600px;
width: 100%;
z-index: 1;
}
.bar {
position: relative;
z-index: 2;
width: 100%
height: 100px;
}
.inner-bar {
position: relative;
z-index: 3;
width: 100%
height: 50px;
}