Sometimes you may find you wish to add custom css to a specific block or to the whole template. This can be done in two ways with uiPress.

If you want your css to be global, you can add in template settings which is accessed within the uiBuilder from the top right settings button.

Once here, select the advanced tab and you will see the option to add custom css.

Alternatively if you want your css to only affect a specific block, you can add it to the advanced section of the block settings. You can access this by either clicking the block and selecting the advanced tab or right clicking the block or layer and selecting the advanced option.