Prestashop install requiring minor revisions. (requirements revised)

Hi and thanks for viewing.

I’m stuck with a website and would be grateful for some assistance, these are the items I would like resolved. Before I continue, I can confirm that (as a precaution) the site files and DB have been backed-up:

Spacing issue on home page, slider buttons are 'underneath' header text (with black background). It would also be nice if the header title was vertically inline with the slider above(see extract)

Contact form: add Captcha (or similar, I can create the account where required) if possible. Remove a field called ‘Order ID’.

Time permitting, I would also be grateful for any feedback or improvements that can be made.

FTP account / Username for the presta installation will be provided. Note that this shop is only a display portal and no payment / shopping cart system has been installed/configured.

Thanks!