| <!DOCTYPE html> | |
| <meta charset="UTF-8"> | |
| <title>CSS Backgrounds Test: box-shadow and empty box (edge)</title> | |
| <link rel="author" title="Gérard 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> |