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An element with position: absolute; is positioned relative to the nearest positioned ancestor (instead of positioned relative to the viewport, like fixed). However; if an absolute positioned element has no positioned ancestors, it uses the document body, and moves along with page scrolling.
Disabling scroll with only CSS. There's another way to disable scrolling that is commonly used when opening modals or scrollable floating elements. And it is simply by adding the CSS property overflow: hidden; on the element you want to prevent the scroll.
We can use the CSS “::-webkit-scrollbar” property which is responsible for changing the shape, color, size, shade, shadow, etc. of the scroll bar. But, here the property which we will use is the direction property of CSS for changing the position of the scroll bar.
You need to wrap the text in a div element and include the absolutely positioned element inside of it.
<div class="container">
<div class="inner">
<div class="full-height"></div>
[Your text here]
</div>
</div>
Css:
.inner: { position: relative; height: auto; }
.full-height: { height: 100%; }
Setting the inner div's position to relative makes the absolutely position elements inside of it base their position and height on it rather than on the .container div, which has a fixed height. Without the inner, relatively positioned div, the .full-height div will always calculate its dimensions and position based on .container.
* {
box-sizing: border-box;
}
.container {
position: relative;
border: solid 1px red;
height: 256px;
width: 256px;
overflow: auto;
float: left;
margin-right: 16px;
}
.inner {
position: relative;
height: auto;
}
.full-height {
position: absolute;
top: 0;
left: 0;
right: 128px;
bottom: 0;
height: 100%;
background: blue;
}<div class="container">
<div class="full-height">
</div>
</div>
<div class="container">
<div class="inner">
<div class="full-height">
</div>
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maiores quas assumenda voluptate qui odio laboriosam totam repudiandae? Doloremque dignissimos voluptatibus eveniet rem quasi minus ex cumque esse culpa cupiditate cum architecto! Facilis deleniti unde suscipit minima obcaecati vero ea soluta odio
cupiditate placeat vitae nesciunt quis alias dolorum nemo sint facere. Deleniti itaque incidunt eligendi qui nemo corporis ducimus beatae consequatur est iusto dolorum consequuntur vero debitis saepe voluptatem impedit sint ea numquam quia voluptate
quidem.
</div>
</div>http://jsfiddle.net/M5cTN/
position: fixed; will solve your issue. As an example, review my implementation of a fixed message area overlay (populated programmatically):
#mess {
position: fixed;
background-color: black;
top: 20px;
right: 50px;
height: 10px;
width: 600px;
z-index: 1000;
}
And in the HTML
<body>
<div id="mess"></div>
<div id="data">
Much content goes here.
</div>
</body>
When #data becomes longer tha the sceen, #mess keeps its position on the screen, while #data scrolls under it.
So gaiour is right, but if you're looking for a full height item that doesn't scroll with the content, but is actually the height of the container, here's the fix. Have a parent with a height that causes overflow, a content container that has a 100% height and overflow: scroll, and a sibling then can be positioned according to the parent size, not the scroll element size. Here is the fiddle: http://jsfiddle.net/M5cTN/196/
and the relevant code:
html:
<div class="container">
<div class="inner">
Lorem ipsum ...
</div>
<div class="full-height"></div>
</div>
css:
.container{
height: 256px;
position: relative;
}
.inner{
height: 100%;
overflow: scroll;
}
.full-height{
position: absolute;
left: 0;
width: 20%;
top: 0;
height: 100%;
}
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