Reduce header shadow on mobile

ui/app/css/itcss/components/confirm.scss

@@ -38,6 +38,8 @@
     top: 0;
     box-shadow: none;
     height: calc(100vh - 41px - 100px);
+    border-top-left-radius: 0;
+    border-top-right-radius: 0;
   }
 }
 
@@ -301,5 +303,7 @@ section .confirm-screen-account-number,
 
   @media screen and (max-width: $break-small) {
     border-top: 1px solid $alto;
+    border-bottom-left-radius: 0;
+    border-bottom-right-radius: 0;
   }
 }

ui/app/css/itcss/components/header.scss

@@ -10,7 +10,7 @@
   @media screen and (max-width: 575px) {
     padding: 0 12px;
     width: 100%;
-    box-shadow: 0 2px 2px 1px rgba(0, 0, 0, .08);
+    box-shadow: 0 0 0 1px rgba(0, 0, 0, .08);
     z-index: $mobile-header-z-index;
   }