fixed storage hint layout

pass/public/styles/key/key.less

@@ -81,16 +81,21 @@ main {
     }
   }
 
+  > #store {
+    > p {
+      line-height: 1.5;
+    }
+    > a.button {
+      padding: 0.5rem;
+    }
+  }
+
   > #charge {
     grid-area: content;
     > #checkout > #checkout-amounts {
       #checkout-amounts-template;
     }
-    > #store {
-      > p {
-        line-height: 1.5;
-      }
-    }
+
     .hint {
       font-size: 0.8rem;
       position: relative;
@@ -130,12 +135,8 @@ main {
       margin-top: unset;
     }
 
-    > #charge {
-      > #store {
-        display: flex;
-        flex-direction: column;
-        align-items: center;
-      }
+    > #store {
+      grid-area: content;
     }
   }
 }