How to change the appearance of the fonts in blocks
Blocks now include the fonts tab ('T' icon).
The options displayed in this tab will depend on the block type. Each block type is slightly different and will only display the options that apply to the block.
The four possible options are:
By default, the font styles are set to the system defaults.
Note: if you aren't seeing the option in your blocks you will need to start by updating the Legacy Font options within Font settings, click here to view more details.