page: fix border radius of rows with background

scss/_page.scss

@@ -27,6 +27,13 @@ div.page {
 
         &:first-child {
             border-top: 0;
+            border-top-left-radius: 0.2em;
+            border-top-right-radius: 0.2em;
+        }
+
+        &:last-child {
+            border-bottom-left-radius: 0.2em;
+            border-bottom-right-radius: 0.2em;
         }
 
         div.col {
@@ -66,6 +73,10 @@ div.page {
         div.row {
             display: block;
 
+            &:first-child, &:last-child {
+                border-radius: 0;
+            }
+
             div.col {
                 margin: 2em 0 0 0;