<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>CSS Backgrounds and Borders Module Level 3: border-radius in cssText</title> <link rel="help" href="https://drafts.csswg.org/css-backgrounds/#border-radius"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> </head> <body> <div id="test"></div> <script> test(() => { const element = document.getElementById("test"); assert_equals(element.style.cssText, "", "cssText is initially empty"); element.style.borderRadius = "10px"; assert_equals(element.style.cssText, "border-radius: 10px;"); element.style.borderTopLeftRadius = "20px"; assert_equals(element.style.cssText, "border-radius: 20px 10px 10px;"); element.style.borderBottomLeftRadius = "30px"; assert_equals(element.style.cssText, "border-radius: 20px 10px 10px 30px;"); }, "Setting border-radius does not expand to longhand properties in cssText."); </script> </body> </html>