Adjust header animation

(also update animate.css to 4.1.0)

assets/scss/style.scss

@@ -158,6 +158,7 @@ table {
   box-sizing: border-box;
   box-shadow: -1px -2px 3px rgba(0, 0, 0, 0.45);
   background-color: $dark-grey;
+  animation-duration: .3s;
 }
 
 .hdr-wrapper {

layouts/partials/header.html

@@ -1,4 +1,4 @@
-	<header id="site-header" class="animated slideInUp faster">
+	<header id="site-header" class="animated">
 		<div class="hdr-wrapper section-inner">
 			<div class="hdr-left">
 				<div class="site-branding">