--- docbook.css.orig 2019-07-27 15:56:36.000000000 +1000 +++ docbook.css 2019-07-27 16:07:41.000000000 +1000 @@ -334,14 +334,18 @@ .important { font-style:italic; border: 1px solid #a00; border-left: 12px solid #c00; width: 90%; } +.important { + width: calc(90% - 11px); +} + .warning { color: #9F1313;