I made a super-simple fix for the current lack of DuckDuckGo multi-columns on a desktop PC. Multi-columns broke a few days ago.

Works with the Stylus UserStyle addon for your Web browser. Tested in Opera on Windows…

@-moz-document url-prefix("https://duckduckgo.com/") {
}
.react-results--main {
column-count: 3;
width: 1500px;
background-color: #eff2f7;
}
.wLL07_0Xnd1QZpzpfR4W {
display: inline-block;
width: 450px;
}

It’ll do as a temporary fix, until the vastly more complex DuckDuckGo – Multi-Columns – UserCSS (userstyle) v.40 is fixed.