*We do not recommend using CSS because the blocks are already responsive and customizable. Using CSS can cause issues with responsiveness and therefore obstruct your visitors' experience.
To use custom CSS, there are two options:
(1) Use the 'scripts' panel in the menu after clicking your project, and use the <style> brackets.
(2) Use the 'Html' element, and paste your CSS in there, also using the <style> brackets.