Explain why font sizes and color elements are important when developing
screens design used in a public venue. Describe at least three (3) other
graphical elements that need to be considered in screen design.
The font and color are two main part of any website.
The font sizes are different because the browser programmers make different assumptions about the normal user's system.
There's nothing wrong with that, and this is also why you should not use px to set the font size. On a computer with a high-resolution screen, your font will be too small. Certainly 10px will be unreadable on many people's computers.
color: we use different color to make our site use friendly and attractive to the public user.