Stop specialized views breaking on thin screens

This isn't great, but at least it won't be as broken as it was before.
I'll try to follow this up with a better improvement soon.

tildes/scss/modules/_site-header.scss

@@ -19,16 +19,20 @@
 
   .toast {
     width: auto;
-    margin: 0 0.2rem 0 0;
-    padding: 0.2rem 0.4rem 0.2rem 1.4rem;
+    margin: 0 0.2rem 0 -1rem;
+    padding: 0.2rem 0.4rem;
+
+    @media (min-width: $size-xs) {
+      margin-left: 0;
       text-indent: -1rem;
-    overflow: hidden;
+      padding-left: 1.4rem;
 
       a {
         white-space: nowrap;
       }
     }
   }
+}
 
 .site-header-context {
   white-space: nowrap;