style update mainpage

static/css/custom.css

@@ -1,4 +1,49 @@
-/* 
- This CSS file is used to override the existing styles of the theme.
- You can change the article headings, fonts, colors, etc.
-*/
+:root {
+  color-scheme: only dark;
+}
+
+body {
+  background-color: #272727;
+  color: #00ad8e;
+}
+
+.features-box {
+  background-color: #272727;
+  color: #00ad8e;
+}
+
+.feature-box {
+  background-color: #3d3d3d;
+  color: inherit;
+}
+
+.navbar-link {
+  color: white;
+}
+
+.border-green-custom {
+  border-color: #10473d;
+}
+
+.text-green-custom {
+  color: #00ad8e;
+}
+.text-white-custom {
+  color: white;
+}
+
+.text-lightgray-custom {
+  color: #787777;
+}
+
+.bg-darker-green-custom {
+  background-color: #0c8771;
+}
+
+.bg-gray-custom {
+  background-color: #272727;
+}
+
+.bg-darkergrey-custom {
+  background-color: #121212;
+}