diff --git a/quartz/styles/base.scss b/quartz/styles/base.scss
index 181501c09..06e8873b7 100644
--- a/quartz/styles/base.scss
+++ b/quartz/styles/base.scss
@@ -315,21 +315,21 @@ h6 {
 
 // typography improvements
 h1 {
-  font-size: 33px;
+  font-size: 2.25rem;
   margin-top: 2.25rem;
   margin-bottom: 1rem;
   letter-spacing: -0.02em;
 }
 
 h2 {
-  font-size: 22px;
+  font-size: 1.75rem;
   margin-top: 1.9rem;
   margin-bottom: 1rem;
   letter-spacing: -0.01em;
 }
 
 h3 {
-  font-size: 22px;
+  font-size: 1.25rem;
   margin-top: 1.62rem;
   margin-bottom: 1rem;
   letter-spacing: -0.01em;
@@ -338,7 +338,7 @@ h3 {
 h4,
 h5,
 h6 {
-  font-size: 11px;
+  font-size: 1rem;
   margin-top: 1.5rem;
   margin-bottom: 1rem;
   letter-spacing: 0;