diff --git a/Resources/Private/Fusion/Core/AbstractSection.fusion b/Resources/Private/Fusion/Core/AbstractSection.fusion
index 62a4921..2be7981 100644
--- a/Resources/Private/Fusion/Core/AbstractSection.fusion
+++ b/Resources/Private/Fusion/Core/AbstractSection.fusion
@@ -1,6 +1,10 @@
 prototype(Neos.Form.FusionRenderer:AbstractSection) < prototype(Neos.Fusion:Tag) {
     @context.containerElement = ${this.containerElement}
     tagName = 'fieldset'
+    attributes {
+        class = ${containerElement.properties.elementClassAttribute}
+        class.@if.hasCustomClass = ${containerElement.properties.elementClassAttribute ? true : false}
+    }
     content = Neos.Fusion:Array {
         legend = Neos.Fusion:Tag {
             tagName = 'legend'