One common thing I come across on websites is this snippet of code:
body:before {
content: "";
width: 0;
height: 100%;
float: left;
margin-top: -31700px;
}
What happens when this CSS is implemented?
One common thing I come across on websites is this snippet of code:
body:before {
content: "";
width: 0;
height: 100%;
float: left;
margin-top: -31700px;
}
What happens when this CSS is implemented?
As per information found on this particular website, the use of opera fix can be seen at . This method is employed for creating a sticky footer that remains fixed to the bottom of the window, even when there isn't enough content to fill the screen.
The CSS Code
Provided below is the CSS code necessary to achieve a truly sticky footer placement.
/*Opera Fix*/
body:before {
content:"";
height:100%;
float:left;
width:0;
margin-top:-32767px;/
}
To see a live demonstration using an interactive tool, visit this fiddle: http://jsfiddle.net/f3Uvs/2/
Utilized for enhancing the visual appearance of an element using the content property. By default, this element is displayed inline. The notation ::before was first introduced in CSS 3 to differentiate between pseudo-classes and pseudo-elements. However, browsers also recognize the :before notation from CSS 2.
Reference: https://developer.mozilla.org/en-US/docs/Web/CSS/::before
If you're using the Opera Browser, try grabbing the bottom of the window and moving it up and then down to notice any unexpected behavior. This issue has historically been a problem with Opera.
In such situations, use body:before { }.
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