diff --git a/src/renderer/src/styles/app.css b/src/renderer/src/styles/app.css
index bdd8cf5..33f16ce 100644
--- a/src/renderer/src/styles/app.css
+++ b/src/renderer/src/styles/app.css
@@ -591,6 +591,7 @@ textarea:focus-visible {
   gap: 10px;
   border-bottom: 1px solid var(--line);
   background: rgba(255, 255, 255, 0.94);
+  position: relative;
 }
 
 .canvas-toolbar .spacer {
@@ -615,6 +616,11 @@ textarea:focus-visible {
   flex-direction: column;
   align-items: center;
   gap: 2px;
+  /* 相对整个工具栏绝对居中，不受左右两区宽度差影响 */
+  position: absolute;
+  left: 50%;
+  top: 50%;
+  transform: translate(-50%, -50%);
 }
 
 .flow-name {