Hello Sir,
I've read your project description carefully, and I understand that you're looking for someone to make some modification to the code and CSS. Such job is my daily practice, and I'm confident to say that I can complete this job.
My name is Duc Nguyen, and I'm a Senior Web Developer with more than 5 years experience working with PHP, MySQL, Linux, Bootstrap, jQuery, etc. I'm a fulltime freelancer so I can start the job immediately.
If you have any questions, don't refrain to ask.
Hope to hear from you soon.
Best regards.