[PYT-202] Update Ecosystem jumbotron (#58)

Author: patmellon

_sass/ecosystem.scss

@@ -1,12 +1,10 @@
 .ecosystem .jumbotron {
+  @include desktop {
+    height: 360px;
+  }
+
   h1 {
-    font-size: rem(52px);
-    text-transform: none;
-    letter-spacing: -1.65px;
-    line-height: rem(50px);
-    margin-bottom: rem(30px);
-    position: relative;
-    left: -5px;
+    padding-top: rem(35px);
   }
 
   p.lead {
@@ -18,8 +16,21 @@
   }
 }
 
+.ecosystem .main-background {
+  height: 275px;
+
+  @include desktop {
+    height: 480px;
+  }
+}
+
 .ecosystem .main-content-wrapper {
   background-color: $light_grey;
+
+  @include desktop {
+    margin-top: 390px + $desktop_header_height;
+  }
+  margin-top: 275px;
 }
 
 .ecosystem.ecosystem-detail .main-content-wrapper {