How much to integrate a one-page-scroll into an AngularJS single-page app?

How many hours would to take to integrate a one-page-scroll theme into an AngularJS SPA app? How many hours would you take to integrate a theme like below into a MEAN.io single page app? For a theme that works exactly like this: http://sveccdesign.com/preview/applight/v2/versions/white/2/ And has a background video on the first slide/page as shown in this: http://themeforest.net/item/wunderkind-one-page-parallax-theme/7601990?WT.ac=search_item&WT.oss_phrase=one%20page&WT.oss_rank=6&WT.z_author=VossenDesign i.e The first page "index" is the landing page that shows this. And this along with the rest of the application is a single page application. The rest of the app is a different design altogether and this theme is only shown on the "/" route. A much smaller version for such a mean.io app would be: http://www.breezejs.com/samples/zza I was asked by a client to do it in one hour into an existing app that was not developed by me, and I could not do it in that time frame - obviously I took much more time and got stuck too dealing with the styling conflicts from the application styles and template styles. Well, that work was allocated to somebody else - and I left the client too. But, in retrospection, I would like to understand if the the client really made a reasonable expectation.