RadFormDecorator decorates only textboxes, which do not have a CSS class. The idea is that if a textbox has a CSS class, then probably it is styled by some other styles.
In order to apply a right text alignment to the decorated textboxes, you can use CSS selectors with HTML elements
instead of CSS classes, for example:
"SomeContainer" is a CSS class of an element, which wraps the textboxes.
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