gtk:css-provider-load-from-data (provider data)

provider -- a gtk:css-provider object
data -- a string for the CSS data

Loads data into the CSS provider, making it clear any previously loaded information. To track errors while loading CSS, connect to the "parsing-error" signal of the gtk:css-provider object. This function is deprecated since 4.12. Use the gtk:css-provider-load-from-string or gtk:css-provider-load-from-bytes functions instead.