rustdoc: improve alignment of out-of-band page info

Author: notriddle

src/librustdoc/html/static/css/rustdoc.css

@@ -138,7 +138,7 @@ h1, h2, h3, h4 {
 	margin-top: 0;
 }
 .main-heading h1 {
-	margin: 9px 0 0 0;
+	margin: 0;
 	padding: 0;
 	flex-grow: 1;
 	/* We use overflow-wrap: break-word for Safari, which doesn't recognize
@@ -151,7 +151,7 @@ h1, h2, h3, h4 {
 .main-heading {
 	display: flex;
 	flex-wrap: wrap;
-	padding-bottom: 6px;
+	padding: 9px 0 6px 0;
 	margin-bottom: 15px;
 }
 /* The only headings that get underlines are:
@@ -668,7 +668,10 @@ ul.block, .block li {
 
 .out-of-band {
 	flex-grow: 0;
-	font-size: 1.125rem;
+	font-size: 1.25rem;
+	align-items: center;
+	display: flex;
+	gap: 0.25em;
 }
 
 .docblock code, .docblock-short code,
@@ -1120,6 +1123,8 @@ so that we can apply CSS-filters to change the arrow color in themes */
 .since {
 	font-weight: normal;
 	font-size: initial;
+	/* align with the word "source" in all lowercase */
+	font-variant-numeric: oldstyle-nums;
 }
 
 .rightside {
@@ -1596,7 +1601,7 @@ details.toggle > summary::before {
 	/* toggle plus */
 	background: url('data:image/svg+xml,<svg width="19" height="19" stroke="black" fill="none" \
 xmlns="http://www.w3.org/2000/svg"><path d="M2.5 2.5h14v14h-14v-14.5" \
-shape-rendering="crispEdges"/><path d="M6 9.5h7M9.5 13.5V5.5"/></svg>') no-repeat top left;
+shape-rendering="crispEdges" stroke="grey"/><path d="M6 9.5h7M9.5 13.5V5.5"/></svg>') no-repeat top left;
 	content: "";
 	cursor: pointer;
 	width: 18px;
@@ -1677,7 +1682,7 @@ details.toggle[open] > summary::before {
 	/* toggle minus */
 	background: url('data:image/svg+xml,<svg width="19" height="19" \
 shape-rendering="crispEdges" stroke="black" fill="none" xmlns="http://www.w3.org/2000/svg"><path \
-d="M2.5 2.5h14v14h-14v-14.5"/><path d="M6 9.5h7"/></svg>') no-repeat top left;
+d="M2.5 2.5h14v14h-14v-14.5" stroke="grey"/><path d="M6 9.5h7"/></svg>') no-repeat top left;
 }
 
 details.toggle[open] > summary::after {
@@ -1743,10 +1748,12 @@ in src-script.js
 		text-align: left;
 		margin-left: initial;
 		padding: initial;
+		display: block;
 	}
 
 	.out-of-band .since::before {
 		content: "Since ";
+		font-variant-numeric: normal;
 	}
 
 	/* Hide the logo and item name from the sidebar. Those are displayed

tests/rustdoc-gui/scrape-examples-layout.goml

@@ -44,5 +44,5 @@ assert-position: (".scraped-example .code-wrapper .prev", {"y": 226 + |offset_y|
 
 // Then with mobile
 set-window-size: (600, 600)
-assert-position: (".scraped-example .code-wrapper", {"y": 308})
-assert-position: (".scraped-example .code-wrapper .prev", {"y": 308 + |offset_y|})
+assert-position: (".scraped-example .code-wrapper", {"y": 311})
+assert-position: (".scraped-example .code-wrapper .prev", {"y": 311 + |offset_y|})