description: This extension allows form designers to specify layout preferences for questionnaire items by assigning CSS class names. These classes can be used to control the visual presentation of items in the form renderer. package_name: ca.on.oh derivation: constraint name: ItemStyle type: Extension elements: valueString: {type: string, short: CSS class string, index: 0} package_version: eforms-1.0.0-alpha1.0.0 class: extension kind: complex-type url: http://ontariohealth.ca/fhir/eforms/StructureDefinition/sdc-questionnaire-itemStyle base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [valueString]