web: keep the footer in place while search results load

web/src/components/search/searchContainer.module.scss

@@ -1,6 +1,8 @@
 .searchContainer {
   max-width: var(--size-width-lead);
   margin: 0 auto var(--spacing-section-bottom);
+  // keep the footer below the fold while the results stream in or change
+  min-height: 100vh;
 
   a {
     text-decoration: none;