refined alert window

src/scss/_modal.scss

@@ -5,7 +5,7 @@ section.modal {
 	left: 0;
 	width: 100%;
 	height: 100%;
-	background: rgba(0,0,0,0.2);
+	background: rgba(0,0,0,0.3);
 
 	z-index: 1000;
 	opacity: 0;
@@ -29,6 +29,7 @@ section.modal {
 		padding: 15px;
 		border: none;
 		box-sizing: border-box;
+		box-shadow: 0 0 60px rgba(0,0,0,0.4);
 
 		z-index: 1100;