Have you followed bunk58's code. Create and save the 2 php files in snippets/wayfinder/configs. Create and save the css code, you can either reference this from the config file or link to it in your main template file. Then add [code
[!Wayfinder? &startId=`0` &config=`dropline2`!]
[!Wayfinder? &startId=`[[UltimateParent? &topLevel=`0`]]` &config=`dropline2sub`!]