Adjust front page presentation to scale better

Especially at smaller viewport height.

Author: ctrueden

assets/css/home.css

@@ -13,9 +13,10 @@
 #header img {
   display: block;
   width: auto;
-  height: 60vh;
+  height: calc(70vh - 12em);
   margin: auto;
   padding-top: 5vh;
+  min-height: 200px;
 }
 
 #user-resources, #dev-resources {

assets/css/layout.scss

@@ -601,7 +601,7 @@ $leftColumnArrowOffset: $sidebarWidth - 2*$sidebarMargin - 2*$sidebarPadding - 3
 }
 
 #header p {
-  margin: 2.7em 0 0 0;
+  margin: 1.5em 0 0 0;
   font-size: 1.3em;
   position: absolute;
   width: 100%;