relative pos

assets/style.css

@@ -31,6 +31,7 @@ nav {
     -moz-box-shadow: 0 20px 28px 0 rgba(0,0,0,0.2);
     box-shadow: 0 20px 28px 0 rgba(0,0,0,0.2);
     height: 75px !important;
+    position: relative;
     z-index: 500;
 }
 
@@ -156,6 +157,7 @@ header hr {
     max-height: 0;
     border: 0 solid transparent;
     transition: max-height 0.1s ease, border 0.1s ease;
+    position: relative;
     z-index: 999;
 }