I've got a div that contains a photo tiling style I've been working on. The parent div over all the photos is position:relative while the divs inside holding the photos are position:absolute
I have to use 'position:absolute` for the children to get the layout I want but the problem arises when the parent div (either .daddy or .floatcont) doesn't register with a height and appears empty.
How can I make the parent register a height so I can put content below it on the page?
Code here: http://codepen.io/jeremypbeasley/pen/iBgsp
.floatcont {
position: relative;
background: pink;
width: 90%;
margin: 5%;
}
.floatpic {
position: absolute;
width: 40%;
margin-bottom: 10vh;
}
Absolute positioned elements are removed from the flow, thus ignored by other elements. So you can't set the parents height according to an absolutely positioned element.
In your case, I have come up with one solution. Update your .sixth class like below.
.floatpic.sixth {
top: 270vh;
width: 50%;
z-index: 6;
position:relative;
}
Updated CodePen
Related
Say I have a button positioned inside a div:
.parentDiv {
width: 100px;
height: 50px;
background-color: #B9DEED;
}
.childButton {
position: absolute;
left: 90px;
opacity: .5;
}
<div class="parentDiv">
<button class="childButton">Childbutton</button>
</div>
This gets rendered like so:
Is there a way to display the button so that it is constrained to the div, i.e. it gets cut off after the "C"?
That's not a button positioned inside a div, that's a button (that happens to be child of a div) positioned within the page. For the button to positioned within the div, the div needs to be positioned itself.
Once the parent has position, the overflow: hidden will start to work.
div {
outline: 1px solid blue;
width: 100px;
height: 50px;
position: relative;
overflow: hidden;
}
button {
position: absolute;
left: 90px;
}
<h3>Sample</h3>
<div>
<button>Childbutton</button>
</div>
Core take-away: position is always related to the closest ancestor (it does not have to be the direct parent) that has position. If there is none, it is related to the page. Setting position: relative on a parent establishes a frame of reference without taking the parent out of the document flow.
You can see the difference if you set top: 10px on the button. Try with and without position: relative on the div to verify the frame of reference.
You can use the style overflow: hidden to hide everything outside the parent-element.
This does, however, not apply to position: absolute elements. You would need to use position. relative for that.
I want to create a slider, so here is the code:
div#list_container {
position: relative;
width: 100%;
}
div#first_list {
position: absolute;
left: 0px;
top: 0px;
}
div#second_list {
position: absolute;
left: 70%;
top: 0px;
}
<div id="list_container">
<div id="first_list">
<h1>Smth</h1>
</div>
<div id="second_list" class="aim_list">
<h1>Smth</h1>
</div>
</div>
<h2>Following elements</h2>
It kinda works (I would just change left property to move them), but since parent (div#list_container) is positioned as relative, so it doesn't cover children elements, so another elements, which will go after slider are shown above it. How can I fix it?
When you change position of child elements to absolute, they are no longer relative to their parent element. Either make parent absolute while changing children's position to relative, or add height to parent.
I also highly recommend implementing this using CSS Flexbox, otherwise it will be very difficult to maintain. See if you can work with this:
#list_container {
position: absolute;
width: 100%;
display: flex;
justify-content: space-around;
}
#list_container > *{
flex-grow: 1;
}
The problem is that, since your child elements are with absolute positioning, there is nothing that actually expands the box of the parent element. To fix it, you can add height to the div#list_container, depending on your design target.
I'm making a pong clone using HTML/CSS/Js. I've set a div element to act as a border for the game, just to keep things in a confined space. How do I get elements (for example, a scoreboard) to act relative to their parent element? For example, if I tell the child to move 50% left, it moves to the center of the parent-div, and NOT to the center of the web-page. Basically I want the child confined by the dimensions of their parent (haha). It seems like
child-div {
position:relative;
}
in CSS would do the trick, but it's not...maybe it's because I'm developing in CodeAcademy's IDE?
position:relative means relative to itself not parents/children etc. It seems likely that you want relative on the parent and possibly absolute on the children. Without code, it's hard to help much further
Here's a quick demo for you.
.container {
width: 80%;
height: 250px;
margin: 0 auto;
position: relative;
border: 4px solid green;
}
.scoreboard {
width: 200px;
height: 50px;
background: lightblue;
border: 2px solid grey;
position: absolute;
top: 10px;
/* just for a bit of space */
left: 50%;
/*almost centered*/
margin-left: -100px;
/* half of known width */
}
<div class="container">
<div class="scoreboard"></div>
</div>
Note...there are other centering methods for absolutely positioned divs depending on whether the width is known and browser support requirements
left: 50%; does not center an element...it moves the element's top/left corner to the center of the containing element. You have to move it back half of it's width (if known)...see above.
One final point....positioned elements are not constrained to their ancestor elements but rather positioned in relation to them. It's quite common to have positioned elements outside the bounds of parents.
I have two divs that I would like to place one on top of the other, so I can create a tab system in an applet I am making. These two divs reside within a parent div, that uses auto height because I do not know the exact height of the other two divs (both children will be of same height). I can position the two divs one on top of the other with absolute positioning when the parent uses relative positioning, but the auto height doesn't respond (most likely because of absolute positioned children) creating a border line of an empty div instead of a wrapper with elements inside.
See problem here: http://jsfiddle.net/h5bjt69s/
<div id = "parent">
<div id = "redDiv"></div>
<div class = "clearfix"></div>
<div id = "blueDiv"></div>
</div>
I tried modeling a solution from this, but I believe the auto height throws things off.
Position absolute but relative to parent
How can I wrap the two divs with the parent div and still maintain the overlaying of the two children?
This:
both children will be of same height
Actually solves your problem:
Position one div using position: static; it will determine the height of the parent
Position the other div(s) using position: absolute (it will appear on top)
Updated Fiddle
Here are the changes
#blueDiv {
background-color: blue;
width: 100%;
height: 50px;
position: relative;/*changed*/
top: 0px;
left: 0px;
z-index:2;/*added*/
opacity:0.7;
}
DEMO
Another Style
#blueDiv {
background-color: blue;
width: 100%;
height: 50px;
/*position: relative;removed*/
opacity:0.7;
}
#redDiv {
background-color: red;
width: 100%;
height: 50px;
visibility: visible;
position: absolute;
top: 0px;
left: 0px;
z-index: 0;/*added*/
}
Updated
.container
{
position: absolute;
bottom: 0px;
height: 25px;
left: 200px;
padding-right: 5px;
background-color: black;
overflow: hidden;
}
.child
{
position: relative;
float: left;
height: 100%;
width: 95px;
background-color: #99CCFF;
margin-left: 5px;
}
I when the size of the browser window is smaller than will allow for all the children to fit without wrapping I would like there to be a scrollbar, not the default mechanism of the child elements wrapping.
I'm not in control of the number of child elements so I can not set a width on the container. How can I prevent the wrapping of the child elements?
If you don't want wrapping, you should not use floats - they were created specifically for wrapping.
Use a parent container with overflow:auto and white-space:nowrap and children with display:inline or inline-block.
This is not really possible with simple HTML and CSS. Without knowing the number of child elements, the only way would be to dynamically set a min-width using JavaScript, based on the number of child elements and their total width.
You can add a parent holder () of all childes. And then use the overflow:auto of that div. If that doesn't work then also use self.innerHeight and self.innerWidth (via javascript) for the div height and width.