Why in creating Webpage we have to follow 60% on content and 40% on the creativity and design?

We need to follow 60% content and 40% creativity and design in order to Impress other people to visit our webpage…In creating a webpage content is very important than a design although design also is important in webpage, but actually design is one way that people will impress of our webpage because of our different strategy in creating webpage. So we need to follow 60% content and 40% creativity and design so that many people visit in our different webpage.