rustdoc: make struct fields display: block

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

@@ -701,6 +701,8 @@ a {
 }
 
 .small-section-header {
+	/* fields use <span> tags, but should get their own lines */
+	display: block;
 	position: relative;
 }
 

src/test/rustdoc-gui/src/test_docs/lib.rs

@@ -408,6 +408,11 @@ pub struct WithGenerics<T: TraitWithNoDocblocks, S = String, E = WhoLetTheDogOut
     p: P,
 }
 
+pub struct StructWithPublicUndocumentedFields {
+    pub first: u32,
+    pub second: u32,
+}
+
 pub const CONST: u8 = 0;
 
 pub trait TraitWithoutGenerics {

src/test/rustdoc-gui/struct-fields.goml

@@ -0,0 +1,5 @@
+goto: "file://" + |DOC_PATH| + "/test_docs/struct.StructWithPublicUndocumentedFields.html"
+
+// Both fields must be on their own line. In other words, they have display: block.
+store-property: (first_top, "//*[@id='structfield.first']", "offsetTop")
+assert-property-false: ("//*[@id='structfield.second']", { "offsetTop": |first_top| })