Add header image on the home page

static/css/index.css

@@ -0,0 +1,26 @@
+body {
+	padding-top: 0px;
+}
+
+#header {
+	padding: 10vw 2rem;
+	margin-bottom: 2rem;
+
+	color: white;
+	text-shadow: 1px 1px 2px gray;
+
+	box-shadow: 0 1px 3px rgba(0,0,0,0.16), 0 1px 3px rgba(0,0,0,0.23);
+	background: linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.1)), url('/img/trianglify.svg');
+}
+
+#headerContent {
+	padding-top: 70px; /* account for nav bar */
+}
+
+#header a {
+	color: #a10022 !important;
+}
+
+#title {
+	margin-bottom: 2rem;
+}

static/css/main.css

@@ -2,6 +2,7 @@
 	--main-color: #3f51b5; /* R:63, G:82, B:181 */
 	--main-dark-color: #002984;
 	--main-light-color: #757de8;
+	--accent-color: #FFC107;
 }
 
 body {