diff --git a/styles/components/_alerts.scss b/styles/components/_alerts.scss
index 75d6d7f7..1595370b 100644
--- a/styles/components/_alerts.scss
+++ b/styles/components/_alerts.scss
@@ -48,6 +48,8 @@
   }
 
   .alert__content {
+    flex: 1;
+
     .alert__message {
       &:last-child {
         > *:last-child {
diff --git a/styles/core/_grid.scss b/styles/core/_grid.scss
index b24327c3..17aa81a6 100644
--- a/styles/core/_grid.scss
+++ b/styles/core/_grid.scss
@@ -40,6 +40,7 @@
   }
 
   &.col--grow {
+    flex: 1;
     flex-grow: 1;
   }
 }