diff --git a/crates/formats/src/html.rs b/crates/formats/src/html.rs
index 7f29a9bf2..838965e7a 100644
--- a/crates/formats/src/html.rs
+++ b/crates/formats/src/html.rs
@@ -506,12 +506,23 @@ fn css_len_pt(v: &str) -> Option<f32> {
     }
 }
 
+fn strip_important(v: &str) -> &str {
+    let s = v.trim();
+    if let Some(pos) = s.rfind('!') {
+        let after = s[pos + 1..].trim();
+        if after.eq_ignore_ascii_case("important") {
+            return s[..pos].trim();
+        }
+    }
+    s
+}
+
 /// Apply a `style` attribute to formatting / block properties.
 fn apply_style(css: &str, f: &mut Fmt, align: &mut Option<Align>, preserve: &mut bool, page_break: &mut bool) {
     for decl in css.split(';').take(64) {
         let Some((k, v)) = decl.split_once(':') else { continue };
         let k = k.trim().to_ascii_lowercase();
-        let v = v.trim().trim_end_matches("!important").trim();
+        let v = strip_important(v);
         let lv = v.to_ascii_lowercase();
         match k.as_str() {
             "font-weight" => f.bold = lv.starts_with("bold") || lv.parse::<u32>().is_ok_and(|w| w >= 600),
@@ -1785,4 +1796,23 @@ mod tests {
     fn entities() {
         assert_eq!(unescape("a &lt;b&gt; &#65;&#x42; &bogus; &"), "a <b> AB &bogus; &");
     }
+
+    #[test]
+    fn css_important_casing_and_spacing() {
+        let f = parse("<p style='color: #ff0000 !IMPORTANT; font-size: 16pt ! important; font-weight: 700 !Important; text-align: center !IMPORTANT'>Styled</p>");
+        assert_eq!(f.blocks.len(), 1);
+        let p = match &f.blocks[0] {
+            FBlock::Para(p) => p,
+            b => panic!("expected para, got {b:?}"),
+        };
+        assert_eq!(p.align, Some(Align::Center));
+        match &p.inlines[0] {
+            Inline::Text(_, fmt) => {
+                assert_eq!(fmt.color, Some(wordcraft_doc::props::Rgb(0xFF, 0x00, 0x00)));
+                assert_eq!(fmt.size, Some(16.0));
+                assert!(fmt.bold);
+            }
+            i => panic!("expected text inline, got {i:?}"),
+        }
+    }
 }