diff --git a/web/src/main/resources/static/css/app.css b/web/src/main/resources/static/css/app.css
index 85733c1..66c85ba 100644
--- a/web/src/main/resources/static/css/app.css
+++ b/web/src/main/resources/static/css/app.css
@@ -311,6 +311,7 @@ code.code { padding: 0.125rem 0.5rem; border-radius: 0.25rem; font-family: monos
 .cs-text-wrap { position: relative; flex: 1 1 auto; min-width: 0; }
 .cs-text-wrap .cs-text { width: 100%; }
 .cs-row .cs-tone, .cs-row .btn { flex: 0 0 auto; }
+.cs-tone { width: auto; }
 .ac-list {
     position: absolute; left: 0; right: 0; top: 100%; margin-top: 2px; z-index: 20;
     max-height: 14rem; overflow-y: auto;