Products Web Updates By Year Live-edit CSS in Sources By Umar Hansa Umar is a front-end web developer Two things: You can edit CSS in the Sources Panel. Changes apply to the page in real time (no save required). Alt + Up to increment numeric values (Alt + Down to decrement). Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated May 16, 2017.