When applying custom styles, there are several approaches: setting site-wide custom styles, setting custom styles at the application level, setting styles for a visual, or setting styles for an application filter, described here.
To create custom styles in an application filter,
Ensure that it has an application filter. Hover over a filter, until the controls appear on the top right.
Click the (gear) icon.
The Settings modal window appears.
Set the values:
list-larger-font
.Enter the following code below Enter inline CSS rules here to:
.list-larger-font .picklist-list li { font-size:14px; padding:3px; border-bottom:dotted 1px #ddd; }
Click Apply.
Note the resulting style changes to the application filter.