Make some CSS fixes to the startup screen

Author: baffles

distrib/common/app/startup.css

@@ -44,7 +44,7 @@ footer {
 	height: 17em;
 
 	transition: height .5s;
-	
+
 	display: flex;
 	flex-direction: column;
 }
@@ -53,6 +53,10 @@ footer {
 	height: 1em;
 }
 
+#log.hidden #log-content {
+	overflow: hidden;
+}
+
 #log a {
 	font-size: 80%;
 }