Hi, there.
I have gone through your brief and can see that you are looking for someone who HTML/Javascript/CSS expert.
He is me.
I am excited to submit my proposal for your consideration.
As a professional with over 5 years of experience in website development, I am interested in contributing to your project!
After reading about this opportunity, I am confident that my skills will be a substantial asset to you.
Throughout my career, I have established a reputation as a dedicated professional, using my detail-oriented focus to deliver accurate and flawless results on time.
I'm ready to put my experience to use for you.
I look forward to the opportunity to work with you.
Thank you for your time and consideration.
Regards. Maksim.