Merge pull request #199185 in DEC/fineui from master to feature/x

* commit 'e3c33421c4f241c6bafdef43cbf64f301835fa08':
  无jira任务 body里通用样式font-size还是12px

demo/less/main.less

@@ -63,6 +63,7 @@ body {
   right: 0;
   top: 0;
   bottom: 0;
+  font-size: 1.2rem;
 }
 
 .bi-theme-dark body {
@@ -98,4 +99,4 @@ body {
 
 .bi-progress-bar-bar {
   border-radius: 2rem;
-}
+}