Add hash symbols to headings

src/css/globals.css

@@ -7,7 +7,9 @@ body {
 }
 
 h1, h2, h3, h4, h5 {
+	display: flex;
 	font-weight: bold;
+	gap: 1ch;
 	line-height: 1.2;
 	margin: 0;
 }
@@ -17,14 +19,29 @@ h1 {
 	word-wrap: normal;
 }
 
+h1::before {
+	content: "#";
+	margin-inline-start: -2ch;
+}
+
 h2 {
 	font-size: var(--text-size-xl);
 }
 
+h2::before {
+	content: "##";
+	margin-inline-start: -3ch;
+}
+
 h3 {
 	font-size: var(--text-size-l);
 }
 
+h3::before {
+	content: "###";
+	margin-inline-start: -4ch;
+}
+
 a {
 	color: inherit;
 	text-decoration: underline;