When participants in the study rejected a health website as not being trustworthy, 83% of their comments were related to design factors, such as an unfavorable first impression of the look and feel, poor navigation, color, text size and the name of the website.

https://www.blog.theteamw.com/2011/03/06/100-things-you-should-know-about-people-73-1st-screening-about-trusting-a-website-is-based-on-the-look-and-feel-2/