adding text-shadow to header titles

opentech/static_src/src/sass/layout/_header.scss

@@ -29,6 +29,7 @@
     &__title {
         margin: 0;
         color: $color--white;
+        text-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
         text-transform: uppercase;
     }