Customisation helps to change the look and feel of the fields inside your web form.
With the custom css property you can apply any css properties on a your form field.
Enable the Custom css options in the field set up GUI.
Write the a comma separated Cascading Style Sheet properties
Save the field.
User can customise the size of the field by setting height and with for the fields.
Provide the height and width property for the fields while configuring the field.
Save the field.
By default all form fields will have the tooltip(field description) and placeholder(field name).
User can hide these tooltip and placeholder if not required by just unticking the both options.