PHP & CSS Expert Request Only!

Hello, We are need an expert with PHP/CSS 1) Our homepage resources around 1.5/2mb which is currently 7mb. 2) We need to customize the news boarders in homepage (correcting layout/change fonts type and size). 3) Have to check our administrator (Private CMS) panel for the ADS Management and other few stuff to check. 4) Make the website compatible with other browsers and smartphones for the website once we finish & correcting (validate CSS/html). 5) After all done and complete the validate for our code we need to clean our website from any old and not use-full codes.. so this is the last task to do in this work. We will pay upfront $35 only! and before we hire you we need to make a small test for your experience as we will trust it and once we confirm your work we will hire you and pay the upfront as promised. Regards.