Make Download and API buttons on homepage wider

They get covered up on narrow viewports like phones.

Author: ashawley

resources/css/main.css

@@ -1950,7 +1950,7 @@ a.central-btn.api {
 }
 
 .download {
-  left: 240px;
+  left: 120px;
   top: 145px;
 }
 
@@ -1981,7 +1981,7 @@ a.for-platform {
 
 .api {
   text-align: right;
-  right: 240px;
+  right: 120px;
   top: 145px;
 }