chore: import upstream snapshot with attribution

docs/src/css/custom.css

@@ -0,0 +1,40 @@
+/**
+ * Any CSS included here will be global. The classic template
+ * bundles Infima by default. Infima is a CSS framework designed to
+ * work well for content-centric websites.
+ */
+
+/* You can override the default Infima variables here. */
+:root {
+    --ifm-color-primary: #2e8555;
+    --ifm-color-primary-dark: #29784c;
+    --ifm-color-primary-darker: #277148;
+    --ifm-color-primary-darkest: #205d3b;
+    --ifm-color-primary-light: #33925d;
+    --ifm-color-primary-lighter: #359962;
+    --ifm-color-primary-lightest: #3cad6e;
+    --ifm-code-font-size: 95%;
+    --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.1);
+}
+
+/* For readability concerns, you should choose a lighter palette in dark mode. */
+[data-theme='dark'] {
+    --ifm-color-primary: #25c2a0;
+    --ifm-color-primary-dark: #21af90;
+    --ifm-color-primary-darker: #1fa588;
+    --ifm-color-primary-darkest: #1a8870;
+    --ifm-color-primary-light: #29d5b0;
+    --ifm-color-primary-lighter: #32d8b4;
+    --ifm-color-primary-lightest: #4fddbf;
+    --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.3);
+}
+
+article > header > h1 {
+    font-size: 2rem !important;
+}
+
+div > h1,
+header > h1,
+h2 > a {
+    font-size: 2rem !important;
+}