Remove debug printf

code/compiler/07/runtime.c

@@ -156,5 +156,4 @@ extern void f_main(struct stack* s);
 int main(int argc, char** argv) {
     struct node_global* first_node = alloc_global(f_main, 0);
     struct node_base* result = eval((struct node_base*) first_node);
-    printf("%d\n", ((struct node_num*) result)->value);
 }

themes/vanilla/assets/scss/style.scss

@@ -1,6 +1,6 @@
 $container-width: 800px;
 $primary-color: #36e281;
-$primary-color-dark: #1dc868;
+$primary-color-dark: darken($primary-color, 10%);
 $font-heading: "Lora", serif;
 $font-body: "Raleway", serif;
 $font-code: "Inconsolata", monospace;