diff --git a/frontend/src/components/workspace/artifacts/artifact-file-detail.tsx b/frontend/src/components/workspace/artifacts/artifact-file-detail.tsx
index 32417075..db59d746 100644
--- a/frontend/src/components/workspace/artifacts/artifact-file-detail.tsx
+++ b/frontend/src/components/workspace/artifacts/artifact-file-detail.tsx
@@ -722,6 +722,7 @@ function buildArtifactViewerSrcDoc({
     .preview {
       width: 100%;
       height: 100%;
+      padding: 10px 12px;
       border: 1px solid var(--line);
       border-radius: var(--radius);
       background: var(--panel);