Hello! How are you?
My name is Guilherme. I am proficient in HTML5, CSS3 and (most important) JavaScript. Before I explain to you how I can complete your project, allow me a moment to explain why my bid is low. My bid is low because I am new to freelancer.com. Therefore, I have no reviews, which may give you the impression that I am a bad candidate. However, I beg to differ. I have been studying web development for quite some time now (through some different books and online courses) and I am confident that I can satisfy your needs. I only ask that you to give me the chance to prove myself and earn your 5-star review.
You say you need to change some things in your website. Could you be more specific? Could you link your website?
Please contact me to discuss more! Cheers!