more polish

com.unity.perception/Editor/Randomization/Uxml/Randomizer/RandomizerList.uxml

             <TextElement
                 class="scenario__info-box"
                 text="Randomizers are executed in the order below. You can change the order by dragging Randomizers up or down using the handle bar to their left."
-                style="margin-left: 3px; margin-right: 3px"/>
+                style="margin-left: 3px; margin-right: 3px; margin-top: 3px"/>
             <VisualElement name="randomizers-container" style="margin-top: 3px; min-height: 100px;"/>
             <VisualElement style="flex-direction: row; align-items: center; justify-content: center; margin-top: 2px;">
                 <Button name="add-randomizer-button" text="Add Randomizer"/>

com.unity.perception/Editor/Randomization/Uxml/ScenarioBaseElement.uxml

             class="scenario__info-box"
             text="Scenarios control the execution flow of your simulation by applying randomization parameters. Make sure to always have only one scenario active within your scene."/>
         <VisualElement name="inspector-properties" style="margin-bottom: 4px;"/>
-        <VisualElement class="scenario__dark-viewport" style="padding-left: 16px">
-            <Toggle label="Quit On Complete" tooltip="Quit the application when the scenario completes" binding-path="quitOnComplete"/>
+        <VisualElement class="scenario__dark-viewport" >
+            <TextElement text="Scenario Properties" class="title-label" style="margin-left: 3px; margin-top:3px"/>
+            <Toggle label="Quit On Complete" tooltip="Quit the application when the scenario completes" binding-path="quitOnComplete" style="margin-top:2px"/>
-                <Foldout text="Constants" name="constants-list" tooltip="A list of parameters for this scenario that will be JSON serialized in the configuration file."/>
+                <Foldout style="padding-left: 16px" text="Constants" name="constants-list" tooltip="A list of parameters for this scenario that will be JSON serialized in the configuration file."/>
                 <editor:PropertyField name="configuration-file-name" label="Constants File Name" binding-path="serializedConstantsFileName"/>
                 <VisualElement style="flex-direction: row;">
                     <Button name="serialize" text="Serialize To Config File" style="flex-grow: 1;"