Update lightweightpopup.css

Author: mianzaid

css/lightweightpopup.css

@@ -21,6 +21,7 @@
 	top:0;
 	bottom:0px;
 	margin:0px auto;
+	height:100vh;
 }
 .lwp .loading{
 	text-align:center;
@@ -86,4 +87,4 @@
 }
 .lwp-hidden{
 	overflow:hidden;
-}
+}