diff --git a/css/light-grey.css b/css/light-grey.css
index c310f0726..011ecb742 100644
--- a/css/light-grey.css
+++ b/css/light-grey.css
@@ -1442,6 +1442,7 @@ fieldset .details > .field_container {
 #SiloSelection * {
   box-sizing: border-box;
   vertical-align: middle;
+  width: 100%;
 }
 #SiloSelection .field_input_extkey {
   display: table;
diff --git a/css/light-grey.scss b/css/light-grey.scss
index eec90881b..c5233fd35 100644
--- a/css/light-grey.scss
+++ b/css/light-grey.scss
@@ -1604,6 +1604,7 @@ fieldset .details>.field_container {
 	*{
 		box-sizing: border-box;
 		vertical-align: middle;
+		width: 100%;
 	}
 
 	.field_input_extkey{