Wordpress - custom CSS changes and shortcodes

We are converting our wordpress site from a fully-developed, custom theme to a stock-purchased theme from Themeforest called Striking. The stock-purchased theme is setup with a child theme, as well as an admin planel to make custom CSS changes directly against the theme. All of your changes should be able to 'survive' a theme upgrade. Meaning if the theme is patched and upgraded your changes stored in the provided admin panel and the child theme must remain unaffected by an upgrade. We want to keep any customization done to the stock-theme as isolated as possible to not jepordize its normal behaviour. Before you bid on this job please make sure that you can speak English and can connect via skype if needed. For this project I have a series of custom CSS changes needed as well as copying an existing pair of shortcodes and functionality from our existing website to a test website. CSS Changes From the attached PDF document there is a screen shot of the home page of the existing website and the test/replacement website. I need the following changes performed: 1. Top header should include the same 2 hover buttons and search field. 2. Remove excess spacing at the top and bottom of the slider 3. Add virtial dotted lines to act as a full column separator Shortcodes The existing theme has two shortcodes to display the graphics shown in the attached PDF. You need to create these. You will have access to the full code from the existing theme if it is simple enough to copy/paste from one theme to another. Again, any custom CSS changes to the page layouts should be stored in the themes custom css area. The short codes can be stored in the child theme so not to jeopardize the base theme.