Customize features and HTML/CSS of Website. Fix and Add Functions. Clean Code. Media site in php framework

I have a viral video/image site that needs some refining. I need to the video, image categories html/css to be changed (design provided in mobile responsive as well). Need to change the look of the category pages, video play page, image page and the rest of the similar pages. I will provide the design. I need to fix functions of the site, change positions of the submit button, link buttons. This site is developed in php framework and is ideal for a team with backend experience (php) and great knowledge in frontend developement (html5/css3/jquery/java) After the designs are complete. I will need to optimize the site, the code by using sites such as google page insight and a few others to make sure the code is clean and minimal errors. The Site must look great on all browsers. Mobile version must be perfect, with big enough buttons, well designed navigation menu and so on. Looking for a skilled team of freelancers to help me out here. This project shouldn't take more than 1 week. Add, "viral" to your bid so that I know you have read my brief. Thank you