I need help with a css/jquery animation

General information for the website: n/a
Kind of development: Customization of existing website
Description of every page/module: The page in question is the below:

http://mcquin.hostings.co.uk/about.html
Description of requirements/features: The requirements are as follow:

- Animation needs to be smoothed both for desktop and mobile
- I need to speak on skype to make sure the requirement is understood
- The project uses scss and jquery, you have to be good at these techs
Extra notes: This job, if you know what to do, should take max 2 hours