diff --git a/core/wiki/macros/sidebar-resizer.tid b/core/wiki/macros/sidebar-resizer.tid
index c8f14d907..deec51a45 100644
--- a/core/wiki/macros/sidebar-resizer.tid
+++ b/core/wiki/macros/sidebar-resizer.tid
@@ -92,7 +92,7 @@ title: $:/core/macros/sidebar-resizer
 
 		storyWidthResult={{{ [<storyWidth>compare:number:lt<storyMinWidth>then<storyMinWidthConverted>addsuffix<storyWidthMetric>] ~[<storyWidth>compare:number:gteq<storyMaxWidth>then<storyMaxWidthConverted>addsuffix<storyWidthMetric>] ~[<storyWidthConverted>addsuffix<storyWidthMetric>] }}}
 
-		tiddlerWidthResult={{{  [<tiddlerWidthMetric>match[%]then<storyWidth>compare:number:lt<storyMinWidth>then{$:/themes/tiddlywiki/vanilla/metrics/tiddlerwidth}compare:number:gteq[0]then{$:/themes/tiddlywiki/vanilla/metrics/tiddlerwidth}]  ~[<tiddlerWidthMetric>match[%]then<storyWidth>compare:number:gteq<storyMaxWidth>then{$:/themes/tiddlywiki/vanilla/metrics/tiddlerwidth}] ~[<tiddlerWidthMetric>!match[%]then<tiddlerWidth>compare:number:lt<tiddlerMinWidth>then<tiddlerMinWidthConverted>addsuffix<tiddlerWidthMetric>] ~[<tiddlerWidthMetric>!match[%]then<tiddlerWidth>compare:number:gteq<tiddlerMaxWidth>then<tiddlerMaxWidthConverted>addsuffix<tiddlerWidthMetric>] ~[<tiddlerWidth>compare:number:lt[0]then[0]addsuffix<tiddlerWidthMetric>] ~[<tiddlerWidthConverted>addsuffix<tiddlerWidthMetric>] }}}>
+		tiddlerWidthResult={{{  [<tiddlerWidthMetric>match[%]then<storyWidth>compare:number:lt<storyMinWidth>then{$:/themes/tiddlywiki/vanilla/metrics/tiddlerwidth}compare:number:gteq[0]then{$:/themes/tiddlywiki/vanilla/metrics/tiddlerwidth}]  ~[<tiddlerWidthMetric>match[%]then<storyWidth>compare:number:gt<storyMaxWidth>then{$:/themes/tiddlywiki/vanilla/metrics/tiddlerwidth}] ~[<tiddlerWidthMetric>!match[%]then<tiddlerWidth>compare:number:lt<tiddlerMinWidth>then<tiddlerMinWidthConverted>addsuffix<tiddlerWidthMetric>] ~[<tiddlerWidthMetric>!match[%]then<tiddlerWidth>compare:number:gteq<tiddlerMaxWidth>then<tiddlerMaxWidthConverted>addsuffix<tiddlerWidthMetric>] ~[<tiddlerWidth>compare:number:lt[0]then[0]addsuffix<tiddlerWidthMetric>] ~[<tiddlerWidthConverted>addsuffix<tiddlerWidthMetric>] }}}>
 
 		<$action-setfield $tiddler="$:/themes/tiddlywiki/vanilla/metrics/tiddlerwidth" text=<<tiddlerWidthResult>>/>
 		<$action-setfield $tiddler="$:/themes/tiddlywiki/vanilla/metrics/storywidth" text=<<storyWidthResult>>/>
diff --git a/themes/tiddlywiki/centralised/styles.tid b/themes/tiddlywiki/centralised/styles.tid
index 5d8da1122..ebf32f54b 100644
--- a/themes/tiddlywiki/centralised/styles.tid
+++ b/themes/tiddlywiki/centralised/styles.tid
@@ -24,4 +24,8 @@ tags: [[$:/tags/Stylesheet]]
 		margin-left: calc({{$:/themes/tiddlywiki/centralised/metrics/storywidth}} / 2 - 42px);
 		width: auto;
 	}
+
+	html .tc-tiddler-frame {
+		width: 100%;
+	}
 }