Oxygen Mini Tutorial
In some cases, the changes that you make via CSS does not show up. Learn how you can troubleshoot this.
In this instance, this textblock has an ID and a class. If I selected the class and tried to change the text color with the class "atomic-subheading", it will not work because styling instructions on the ID "text_block-78-232" have overridden it.
When you're changing the CSS, or if there is any effect when you change the CSS. If there is no effect, it means that is being overridden by another selector (selector refers to either ID or class).
In such cases, you should change the style back to its original style, and then try to make the change on the other selector.