This is why you need to go to professionals who can show their portfolio

Web design and development are the methodologies, technologies and tools used to create high-quality, user-friendly websites. The concept of "web design" refers to the methodologies, while the "development" deals with the actual creation of the website and the products that will be sold via the site. Basically, a web designer is responsible for determining the overall theme of a website and making it as navigable as possible, as well as creating interfaces that will be easier for the users to utilize. On the other hand, a web developer is responsible for building the back-end of the site, i.e., what web pages the user will see, where those pages will be located, and how the pages will interact with each other.