Resolve "fix: improve header font lisibility"

Closes #7 (closed)

src/css/custom.css

@@ -28,8 +28,14 @@
   --ifm-font-family-base: 'asap_regular';
   --ifm-font-family-bold: 'asap_semi';
   --ifm-font-family-italic: 'asap_italic';
-  --ifm-heading-font-weight: '700';
   --ifm-heading-font-family: 'warsaw_gothic';
+  --ifm-heading-font-weight: '700';
+  --ifm-h1-font-size: 4rem;
+  --ifm-h2-font-size: 3rem;
+  --ifm-h3-font-size: 2.5rem;
+  --ifm-h4-font-size: 2rem;
+  --ifm-h5-font-size: 1.75rem;
+  --ifm-h6-font-size: 1.5rem;
 }
 
 /* For readability concerns, you should choose a lighter palette in dark mode. */