background-origin
Quick Summary for background-origin
background-origin CSS property sets the background's origin: from the border start, inside the border, or inside the padding.
Code Usage for background-origin
/* Keyword values */ background-origin: border-box; background-origin: padding-box; background-origin: content-box; /* Global values */ background-origin: inherit; background-origin: initial; background-origin: revert; background-origin: unset; More Details for background-origin
background-origin
The background-origin CSS property sets the background's origin: from the border start, inside the border, or inside the padding.
Note that background-origin is ignored when background-attachment is fixed.
Syntax
/* Keyword values */ background-origin: border-box; background-origin: padding-box; background-origin: content-box; /* Global values */ background-origin: inherit; background-origin: initial; background-origin: revert; background-origin: unset; The background-origin property is specified as one of the keyword values listed below.
Values
border-box The background is positioned relative to the border box.
padding-box The background is positioned relative to the padding box.
content-box The background is positioned relative to the content box.
Formal definition
| Initial value | padding-box |
|---|---|
| Applies to | all elements. It also applies to ::first-letter and ::first-line. |
| Inherited | no |
| Computed value | as specified |
| Animation type | discrete |
Formal syntax
<box>#where
<box> = border-box | padding-box | content-box
Examples
Setting background origins
.example { border: 10px double; padding: 10px; background: url('image.jpg'); background-position: center left; background-origin: content-box; } #example2 { border: 4px solid black; padding: 10px; background: url('image.gif'); background-repeat: no-repeat; background-origin: border-box; } div { background-image: url('logo.jpg'), url('mainback.png'); /* Applies two images to the background */ background-position: top right, 0px 0px; background-origin: content-box, padding-box; } Using two gradients
In this example the box has a thick dotted border. The first gradient uses the padding-box as the background-origin and therefore the background sits inside the border. The second uses the content-box and so only displays behind the content.
.box { margin: 10px 0; color: #fff; background: linear-gradient(90deg, rgba(131,58,180,1) 0%, rgba(253,29,29,0.6) 60%, rgba(252,176,69,1) 100%), radial-gradient(circle, rgba(255,255,255,1) 0%, rgba(0,0,0,1) 28%); border: 20px dashed black; padding: 20px; width: 400px; background-origin: padding-box, content-box; background-repeat: no-repeat; } <div class="box">Hello!</div> Specifications
| Specification |
|---|
| CSS Backgrounds and Borders Module Level 4 # the-background-origin |
See also
background-clip Last modified: Aug 12, 2021, by MDN contributors
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"Olivia, my eldest daughter, caught measles when she was seven years old. As the illness took its usual course I can remember reading to her often in bed and not feeling particularly alarmed about it. Then one morning, when she was well on the road to recovery, I was sitting on her bed showing her how to fashion little animals out of coloured pipe-cleaners, and when it came to her turn to make one herself, I noticed that her fingers and her mind were not working together and she couldn’t do anything. 'Are you feeling all right?' I asked her. 'I feel all sleepy,' she said. In an hour, she was unconscious. In twelve hours she was dead. The measles had turned into a terrible thing called measles encephalitis and there was nothing the doctors could do to save her. That was...in 1962, but even now, if a child with measles happens to develop the same deadly reaction from measles as Olivia did, there would still be nothing the doctors could do to help her. On the other hand, there is today something that parents can do to make sure that this sort of tragedy does not happen to a child of theirs. They can insist that their child is immunised against measles. ...I dedicated two of my books to Olivia, the first was ‘James and the Giant Peach’. That was when she was still alive. The second was ‘The BFG’, dedicated to her memory after she had died from measles. You will see her name at the beginning of each of these books. And I know how happy she would be if only she could know that her death had helped to save a good deal of illness and death among other children."
I just checked google books for BFG, and the dedication is there.
https://www.google.com.au/books/edition/_/quybcXrFhCIC?hl=en&gbpv=1
Roald Dahl, 1986
