diff --git a/src/runboat/webui/runboat-build-element.js b/src/runboat/webui/runboat-build-element.js
index 1cd5d32..83e755e 100644
--- a/src/runboat/webui/runboat-build-element.js
+++ b/src/runboat/webui/runboat-build-element.js
@@ -17,6 +17,7 @@ class RunboatBuildElement extends LitElement {
             padding: 0.5em;
             width: 15em;
             background-color: lightgray;
+            border-radius: 0.5em;
         }
         .build-name {
             font-size: x-small;