diff --git a/CHANGES.md b/CHANGES.md
index 50e129f..541e0e5 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,12 @@
+0.8.0 (UNRELEASED)
+------------------
+
+### Changed
+
+- Increase top margin of heading elements from `1em` to `1.25em` to
+  create more separation from the preceding content.
+
+
 0.7.0 (2021-04-20)
 ------------------
 
diff --git a/sp.css b/sp.css
index 43795da..b41e923 100644
--- a/sp.css
+++ b/sp.css
@@ -7,7 +7,7 @@ body {
   padding: 0 1em;
 }
 h1, h2, h3, h4, h5, h6 {
-  margin: 1em 0 0.5em 0;
+  margin: 1.25em 0 0.5em 0;
   line-height: 1.2;
 }
 a:link {