env-in-custom-properties.tentative.html (989B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <link rel="help" href="https://drafts.csswg.org/css-env-1/"> 5 <title>Test env() will work in custom properties</title> 6 <script src="/resources/testharness.js"></script> 7 <script src="/resources/testharnessreport.js"></script> 8 <style> 9 #parent { 10 --var1: inherited; 11 } 12 #child { 13 --my-width: env(test, 100px); 14 width: var(--my-width); 15 --var1: env(nonexistent); 16 } 17 </style> 18 </head> 19 <body> 20 <div id="parent"> 21 <div id="child"></div> 22 </div> 23 <script> 24 test(() => { 25 const style = window.getComputedStyle(child); 26 assert_equals(style.getPropertyValue("width"), "100px"); 27 }, 'env() is substituted into a custom property'); 28 29 test(() => { 30 const style = window.getComputedStyle(child); 31 assert_equals(style.getPropertyValue("--var1"), ""); 32 }, 'Substitution of unrecognized env() causes guaranteed-invalid'); 33 </script> 34 </body> 35 </html>