1
Mistakes in Web Design
The 10 most egregious UX offenses against users. Web design disasters and HTML horrors are legion, though many usability atrocities are less common than they used to be.
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 4 posts.
2
3
4
The Perfect 3 Column Liquid Layout
3 column website layouts in Flexbox, CSS Grid, and Responsive Columns, along with live demos, the HTML, and CSS to make them work.