improved header styling

source/markdown/posts/test post.md

@@ -7,8 +7,7 @@ tags:
 
 <!-- comment -->
 
-This post exists to test various features such as markdown-to-html conversion.<br />
-A post have title, post date, tags, and content.
+This post exists to test various features such as markdown-to-html conversion, table of contents generation, and metadata parsing.<br />
 
 ## Link
 
@@ -76,7 +75,7 @@ print(z is w) # False. id(z) is not equal to id(w)
 # All integers between -5 and 256 share the same id.
 ```
 
-## Etc
+## Text styling
 
 > blockquote
 >
@@ -90,7 +89,7 @@ _italic_<br />
 this is a ^superscript^ (soon^TM^)<br />
 and this is a ~subscript~ (H~2~O)
 
-## Styling
+## CSS styling
 
 <p align="center">
 	centered paragraph
@@ -122,3 +121,26 @@ $$
 
 [^css_bad]: Based on my experience building this website, Dec 2021.
 [^python_is_overrated]: Based on my infinite wisdom, Dec 2021.
+
+## headers
+
+Headers have different size and indentation depending on their level.
+
+- Post title: `h1`
+- this section: `h2`
+
+### h3
+
+Lorem ipsum blah blah.
+
+#### h4
+
+Lorem ipsum blah blah.
+
+##### h5
+
+Lorem ipsum blah blah.
+
+###### h6
+
+Lorem ipsum blah blah.

source/src/styles/globalStyle.tsx

@@ -212,15 +212,38 @@ const hrCSS = css`
 
 const headerCSS = css`
 	/* intentionally left out h1 */
-
 	h2,
 	h3,
 	h4,
 	h5,
 	h6 {
-		margin-top: -3rem;
+		margin-top: -2rem;
+		margin-bottom: 0.5rem;
 		font-weight: 700;
 	}
+
+	h1 {
+		font-size: 2.5rem;
+	}
+	h2 {
+		font-size: 1.5rem;
+	}
+	h3 {
+		font-size: 1rem;
+		text-indent: 0.5rem;
+	}
+	h4 {
+		font-size: 1rem;
+		text-indent: 1rem;
+	}
+	h5 {
+		font-size: 1rem;
+		text-indent: 1.5rem;
+	}
+	h6 {
+		font-size: 1rem;
+		text-indent: 2rem;
+	}
 `
 
 const markCSS = css`