Before the commit, the dt was forced to 160px of width by bootstrap. Now we allow this size to be bigger, to avoid glitch in UI. When you was inserted a long keyword, the 'delete' button was in the overflow hidden part and so was undeletable. We set min-width by default to 160px to keep the same behaviour by default. And see 2 columns, but if a keyword it too long, we display it, and 'break' the column style. This commit closes #12703