<!DOCTYPE html> | |
<meta charset="UTF-8"> | |
<title>CSS Backgrounds Test: box-shadow and empty box (edge)</title> | |
<link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> | |
<link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-box-shadow"> | |
<link rel="match" href="../reference/ref-filled-green-100px-square.xht"> | |
<meta content="" name="flags"> | |
<meta content="This test checks that an empty box can have a box shadow." name="assert"> | |
<!-- | |
<shadow> = inset? && <length>{2,4} && <color>? | |
A comma-separated pair of numbers in curly braces {A,B} | |
indicates that the preceding type, word, or group occurs | |
at least A and at most B times. | |
A question mark (?) indicates that the preceding type, | |
word, or group is optional (occurs zero or one times). | |
The components of each <shadow> are interpreted as follows: | |
1st <length> | |
Specifies the horizontal offset | |
of the shadow. A positive value draws a shadow that is offset to the right of the box, a negative length to the left. | |
2nd <length> | |
Specifies the vertical offset | |
of the shadow. A positive value offsets the shadow down, a negative one up. | |
4th <length> | |
Specifies the spread distance. Positive values cause the shadow to expand in all directions by the specified radius. Negative values cause the shadow to contract. | |
--> | |
<style> | |
div#green-overlapping-test | |
{ | |
background-color: red; | |
height: 0px; | |
width: 0px; | |
box-shadow: green 50px 50px 0px 50px; | |
} | |
div#red-overlapped-reference | |
{ | |
background-color: red; | |
height: 100px; | |
position: relative; | |
width: 100px; | |
z-index: -1; | |
} | |
</style> | |
<p>Test passes if there is a filled green square and <strong>no red</strong>. | |
<div id="green-overlapping-test"></div> | |
<div id="red-overlapped-reference"></div> |