diff --git a/css/common.css b/css/common.css
index b20639449..e5e528b4f 100644
--- a/css/common.css
+++ b/css/common.css
@@ -9,7 +9,6 @@
 
 /* style reset */
 div.elfinder *,
-div.elfinder .ui-dialog-content,
 div.elfinder :after,
 div.elfinder :before {
     box-sizing: content-box;
diff --git a/css/dialog.css b/css/dialog.css
index 9fd77e480..4a4f139c3 100644
--- a/css/dialog.css
+++ b/css/dialog.css
@@ -179,7 +179,6 @@
 /* content */
 .std42-dialog .ui-dialog-content {
     padding: .3em .5em;
-    box-sizing: border-box;
 }
 
 .elfinder .std42-dialog .ui-dialog-content,