| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>CSS Backgrounds and Borders Module Level 4: parsing background-position-x with valid values</title> |
| <link rel="help" href="https://drafts.csswg.org/css-backgrounds-4/#propdef-background-position-x"> |
| <meta name="assert" content="background-position-x supports the full grammar '[ center | [ left | right | x-start | x-end ]? <length-percentage>? ]#'."> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/support/parsing-testcommon.js"></script> |
| </head> |
| <body> |
| <script> |
| test_valid_value("background-position-x", "center"); |
| test_valid_value("background-position-x", "left"); |
| test_valid_value("background-position-x", "right"); |
| test_valid_value("background-position-x", "x-start"); |
| test_valid_value("background-position-x", "x-end"); |
| test_valid_value("background-position-x", "-20%"); |
| test_valid_value("background-position-x", "10px"); |
| test_valid_value("background-position-x", "0.5em"); |
| test_valid_value("background-position-x", "calc(10px - 0.5em)", "calc(-0.5em + 10px)"); |
| test_valid_value("background-position-x", "left -20%"); |
| test_valid_value("background-position-x", "right 10px"); |
| test_valid_value("background-position-x", "-20%, 10px"); |
| test_valid_value("background-position-x", "center, left, right"); |
| test_valid_value("background-position-x", "0.5em, x-start, x-end"); |
| test_valid_value("background-position-x", "calc(10px - 0.5em), left -20%, right 10px", "calc(-0.5em + 10px), left -20%, right 10px"); |
| </script> |
| </body> |
| </html> |
