Fix layout for alert on home page

Author: stefdworschak

static/css/home.css

@@ -1,10 +1,16 @@
 .container.main-content-shadow {
-    margin-bottom: 0;
     margin: 0;
+    margin-top: 32px;
     width: 100%;
     max-width: none;
 }
 
+.alert {
+    margin: 0 auto;
+    margin-bottom: 10px;
+    max-width: 1140px
+}
+
 .hack-card {
     margin-bottom: 1rem;
 }