fix(demo): fix demo styles in vaadin 25

Author: javier-godoy

src/test/java/com/flowingcode/vaadin/addons/uploadhelper/UploadHelperDemoView.java

@@ -2,7 +2,7 @@
  * #%L
  * Upload Helper Add-on
  * %%
- * Copyright (C) 2022 - 2024 Flowing Code
+ * Copyright (C) 2022 - 2026 Flowing Code
  * %%
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,13 +22,15 @@
 import com.flowingcode.vaadin.addons.DemoLayout;
 import com.flowingcode.vaadin.addons.GithubLink;
 import com.flowingcode.vaadin.addons.demo.TabbedDemo;
+import com.vaadin.flow.component.dependency.CssImport;
 import com.vaadin.flow.router.ParentLayout;
 import com.vaadin.flow.router.Route;
 
 @SuppressWarnings("serial")
 @ParentLayout(DemoLayout.class)
 @Route("upload-helper")
 @GithubLink("https://github.com/FlowingCode/UploadHelper")
+@CssImport("./styles/upload-helper-demo-styles.css")
 public class UploadHelperDemoView extends TabbedDemo {
 
   public UploadHelperDemoView() {

…TA-INF/frontend/styles/shared-styles.css …end/styles/upload-helper-demo-styles.csssrc/test/resources/META-INF/frontend/styles/shared-styles.css renamed to src/test/resources/META-INF/frontend/styles/upload-helper-demo-styles.css src/test/resources/META-INF/frontend/styles/shared-styles.css renamed to src/test/resources/META-INF/frontend/styles/upload-helper-demo-styles.css

@@ -2,7 +2,7 @@
  * #%L
  * Upload Helper Add-on
  * %%
- * Copyright (C) 2022 - 2024 Flowing Code
+ * Copyright (C) 2022 - 2026 Flowing Code
  * %%
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,4 +17,7 @@
  * limitations under the License.
  * #L%
  */
-/*Demo styles*/
+
+#content.upload-helper-demo.demos-v25 vaadin-upload {
+  margin-bottom: calc(var(--vaadin-padding-s) * (1 - var(--vaadin-lumo-theme,0)));
+}