Let's talk about GOOD website design. Truly good. Simple, effective, efficient, detailed, non-fad-following.
Bring a Trailer Auctions is the best place to buy and sell vintage and classic vehicles - Porsche, BMW, Land Rover, and more.
bringatrailer.com
Why is it good? Generally, it follows most everything I consider to be needed for GOOD website design, and it commits nothing I've called awful.
1. It's not an all-white-out.
2. It doesn't use light grey font on a white background.
3. The top border is a different color (black) than the body, providing an immediate context and definition of the main controls.
4. No hamburger icon, no gear icon, no ellipsis icon on the desktop site...Some sites are cursed with when they offer 2 or all 3 and you have to guess/explore to figure out what each offers.
5. No icons shortened with "..." ellipses such that you can't understand what the icon stands for.
6. The often-used search box is up top, out in the open, ready for immediate use. None of this silliness where you have to first open the search window with a click followed by another click to prompt the cursor.
7. Very effective, efficient use of sticky headers. I typically dislike sticky headers except when they're used as effectively as they are here, for showing the title of the car being viewed. Very simple, elegant, non-space-wasting.
8. They've stuck with a theme/layout for years THAT WORKS. No trendy updates for attention.
9. Even with the borderless list of cars, the spacing works such that you're not guessing whether a link is for the info below or above it.
10. Borders are used effectively to differentiate similar items in a list, such as with the Latest Bids on the opening page.
11. The site works great on mobile device such that it's not that much different than the desktop site.
12. Effective use of the side-bar areas. It does not repeat same-buttons throughout the same page. No confusion over whether "that button/command" which looks like "this button/command" are the same thing.
13. Photo navigation is wonderfully simple and effective.
14. No ellipses shortening "text as button" strings which can leave you wondering what the heck the "button" stands for.
I'll list more as I think of them. Even though it's purely flat design site, IT JUST WORKS by virtue of its layout and its controls...sticking to what works and not haphazardly changing things for the sake of offering "something fresh."