When defining a field style, if you leave the Value field blank, the style is presented only in the form view instead of both the form view and list view.

1. Log in to a demo instance.

2. Navigate to System UI > Field Styles and click New.

3. Create two new styles with the following values, and click Submit after creating each one.

   Style 1:
   Table: incident
   Field name: number
   Value: javascript:true
   Style: background-color:purple

   Style 2:
   Table: incident
   Field name: caller
   Value: <Leave blank>
   Style: background-color:purple

4. Check the fields in the list view and the form view and note that the list view style is applied only when the Value field is populated.

Within the field's Style text box, insert a simple default line of CSS code like the following example:

text-align: left