diff --git a/pkg/hicli/html.go b/pkg/hicli/html.go
index f154a62..31425b5 100644
--- a/pkg/hicli/html.go
+++ b/pkg/hicli/html.go
@@ -441,7 +441,7 @@ func writeSpan(w *strings.Builder, attr []html.Attribute) {
 	if isSpoiler && spoiler != "" {
 		w.WriteString(`<span class="spoiler-reason">`)
 		w.WriteString(spoiler)
-		w.WriteString(" </span>")
+		w.WriteString("</span>")
 	}
 	w.WriteByte('<')
 	w.WriteString("span")
diff --git a/web/src/ui/timeline/content/index.css b/web/src/ui/timeline/content/index.css
index ac4506e..75df96e 100644
--- a/web/src/ui/timeline/content/index.css
+++ b/web/src/ui/timeline/content/index.css
@@ -105,6 +105,18 @@ div.html-body {
 		max-width: 5rem;
 	}
 
+	span.spoiler-reason {
+		font-size: .8em;
+		color: var(--secondary-text-color);
+
+		&::before {
+			content: "(";
+		}
+		&::after {
+			content: ") ";
+		}
+	}
+
 	span.hicli-spoiler {
 		filter: blur(4px);
 		transition: filter .5s;